Generally speaking we are at odds with the biological imprint of plants that we grow to harvest their leaves. The plant is programmed to produce the seed for propagation of the species. We are trying to obtain as much of the accessory product as we can get by stripping, to some extent, this requirement of the pant to grow and produce progeny. The plant needs to grow enough to generate enough of the energy factory to successfully maintain its own viability with enough energy for seed production.
Plant growth is dependent on a few things. Air which generally is not an issue,light, water, and some essential elements such as Nitrogen, Phosphorus and Potassium. Water is supplied by rain or by careful watering of the ground around the roots. We know that plants enjoy a well drained medium that allows a rapid passage of water past the roots and away. It generally won't tolerate a continuous bathing of water around its roots and in fact this is more likely to harm the plant rather than help or be of no significance.
Nitrogen is a material needed to be supplied to the plant root Sometimes the soil environment is naturally able to provide this element. Plants such as legumes have an amazing property of fixing nitrogen from the atmosphere and converting it to usable nitrogen in its own roots. When the Nitrogen fixing plant dies the Nitrogen produced, stays in the soil and other species are able to access this. Nitrogen is required for protein production of all kinds including the leaf material, the flower substance and the root material.
Phosphorus is required to produce many of the energy requirements used to transfer materials against concentration and energy gradients and for "simple" metabolism and growth of the plant itself.
Potassium is required to allow plants to pump materials around and into the plant. This generally is associated with Sodium requirement but sodium is ubiquitous and rarely is required to be added as an element for plant growth. There are few situations where sodium is so low as to be needed as an added nutrient. A notable exception would be in hydroponic growing fluid. Potassium is most notable in the production of flowers and is added by plant growers to hasten this aspect. There are other elements required at generally less abundant levels and most are naturally present in soils. Elements such as the trace elements and elements that may be required to buffer extremes of pH. These aspects are more specialised and beyond the scope of this basic presentation.
As mentioned we are acting to frustrate the plant and stimulating its need to succeed. Actions like removing flowering parts or the growing tips of plants stimulate the plant to produce more of these parts. Along with this we observe an increase of leaf material, generally the stuff we're after. If the plant beats us to flowering we observe two things. A change in the quality of leaf material and the amount plus the flavour of the leaf material itself. This irreversible for this part of the growth of the plant. If the plant is an annual the processed has finished and we must grow new plants to be able to continue on our quest.
If the plant is perennial then we are a little luckier as the plant will again transform in its natural cycle to produce more of the herbaceous stuff we're after. Remember that to gain maximum material for our need we need to prevent the plant from flowering while maintaining he conditions required for active growth. Light, moisture, Nitrogen Phosphorus, a little potassium and stop the flowering of the plant if we wish to harvest the leaves.
Ways of supplying the plant the essentials of growth artificially.
Nitrogen can be supplied in one of three ways: Adding well composted humus as extra material to the plant. The compost can be produced by a simple but time demanding process of creating a heap of vegetable matter. this should be well aerated and moist. It shouldn't dry out and it must be turned frequently to allow diffusion of oxygen for the digestion to occur. If the compost is added too early to the growing plants it can have an effect opposite to that we require. The Nitrogen is not yet available and in fact the growing plant can be precipitated into a nitrogen deficient state. The humus is utilising the soluble nitrogen by the composting bacteria. This will reverse when the compost is mature. The solution is to add soluble supplement of nitrogen. The single most available source of nitrogen is agricultural urea.
An easy way to add Potassium is to add ashes from burned wood or paper to the soil. The Potassium is immediately available and will be used by the plant rapidly. Phosphorus is most easily supplied by the addition of "Superphosphate" this is a semi-synthetic product made from calcified bird droppings treated with acid and made availabe as a powdered material.
The three elements can be added as garden quality fertiliser. The levels of Nitrogen (N), Phosphorus (P) and Potassium (K) are genrally marked on the pack. Simply follow the instructions. It is best and recommended that plants grown with fertiliser be cycled through different soils for plants rather than using the same soil for successive years. This is because of soil salt build up and condition plus the potential for plant disease to get a hold. Perennials are best repotted if this is the method of plant nutrition to be used.
A more natural way is to add compost. This must be well decomposed to be effective without the need for secondary supplements. Suggest material that has been composted throughout a whole warm seasons period.
The third way is to grow the plants hydroponically. This is a specialised technique and requires reasonably expensive materials to start up. Hobbyists and production horticulturists are the sources of info on this method.
Adding water to the plant should be carefully controlled. Plants shouldn't be over-watered. Deep soil checks are the most reliable method to determine the plants need for water addition. Occasionally there are plants which require specialised atmospheric moisture. Two methods come to mind. 9a) Surround the base of the plant with water but do not place the plant in water. Most easily done with potted plants in still air environments. Place a layer of pebbles around the base of the pot-plant and add enough water to this base so that the level does not impinge into the base of the pot. (b) Cover the plant with a plastic bag. this will maintain a high humidity but be careful of over-heating the plant by placing the plant in early morning sun and protect from middle day hot sun. This can cook the leaves.
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Ginger:
(Zingiber officionale)
Perennial.

Select
a root from your grocery store’s produce section and get growing!
Ginger
root is sold in a clump that’s often called a “hand.” You’ll
want to
choose a hand that’s fresh and firm with as many “fingers” as
possible.
To get as many plants as you can, cut or break the fingers
off
the main root. Each section with a growing tip will become a
plant.
Be sure to allow any cut surfaces to dry before planting them
in moist
soil.
The tubers
generally are seen at the surface so don't bury the
tuber to any
extent. A light covering of potting mix to maintain the moisture will do
.
Planting is easy : Simply pick a pot that’s at least twice the diameter as the length of your root section. Fill it ¾ full with standard potting soil, and place the small root sections on the soil surface. Water it well. Your plant will survive dry spells, but to get the most consistent growth, keep it damp at all times. Place your ginger pot in a spot where it’ll stay warm. There’s no need to find a sunny spot on your windowsill. At this stage, your ginger actually grows better without direct sunshine.

Galangal: Greater galangal
(Alpinia galanga)
Perennial.

Once
again
you can start the
plant with Galangal purchased at
the fruit market or grocer's. Plant
the tuber with at least
two eyes.
Galangal requires warm-temperate to
subtropical
conditions, and grows best in rich, moist,
well-drained soils.
Galangal is an annual crop,
grown by seed or from rhizome segments; cut
them so that each segment
contains one or two buds. Keep the soil
moist. Rhizome rot is the
principal problem.
For fresh culinary use, dig up
the rhizomes in late summer or early
autumn, usually after the leaves
have yellowed off. Replant a sett or
two for subsequent
harvests.
Galangal can be planted on ridges, usually about 30 cm apart and with 15-23 cm between plants. The crop is planted by setts (small rhizomes) with one or two buds. Plant in spring, after all danger of frost is past and the soil has warmed up at a depth of 5-10 cm. Galangal grows well in pots. It is a perennial herb, between one and two metres in height, depending on variety. The leaves are 25-35 cm long, rather narrow blades, prefers rich, moist soil in a protected, shady position and is drought and frost tender.
Lemon Grass:
(Cymbopogon citratus or C. flexuosus)


Go
to an Asian food market
or where you can buy lemongrass that is in
whole stalks. Look for
as much of the root bottom as possible, but even
ones with
even a portion of the heel left on will root. Put your
selections in a
glass or jar of water. In a few days they start
sprouting roots, but
some may take much longer.
Transplant directly into
your pot or soil and give it good light.
Grow in a
frost-free place in full sun or light shade. The herb likes
moist,
well-drained soil that is slightly acidic. It grows best in
warm,
humid conditions. It can also be grown in a container or in the
greenhouse.
If you move your plant outdoors for the summer, allow it to
acclimatize
over a number of days, first placing it in shade, then
moving it to
part shade before giving it full sun. Both of the common
species are
fast growing perennials that grow to 3 to 6 feet tall and 3
feet
wide. They have long, light green leaves and inconspicuous
flowers.
Lemon grass is hardy in zones 9-11. In other areas it is grown
as an
annual or brought indoors over the winter. The leaf edges are
sharp
and can cause cuts.

Chillies
Annual.


Easy to grow from seedlings or seeds. Need fertile organic rich soil. Well drained. Temp min (Zone 9 or 10) , Fertilise regularly with liquid fertiliser during the growing season and when fruit appears and matures it is important to remove the fruit, other wise there will be an inhibition of fruit production. Chillies can be sun-dried or frozen for delayed usage.
Ideally the plant will grow in an 8 to 10 in pot. When the plant reaches 6 in in height, pinch off the growing tip, This will stimulate peripheral branching. Water a couple of times a week and avoid flooding the plant. Begin the planting in later winter and keep inside until the autumn days have warmed reliably. Transplant the seedlings at about 6 inches.

The Thai basils:

1.
Thai (sweet)
basil, horapha [โหระพา], Hung Que (vietnamese),
Ocimum basilicum, Thai purple basil. => Aniseed flavour.
2.
(Thai) sacred
basil,
(Thai) holy basil, krapao [กะเพรา],
Tulsi or Tulasi (india), Hot Basil,
Ocimum sanctum. =>Little
bit furry. Religious
use
in
India, culinary use in Thailand.
3.
Thai lemon basil, hoary basil, manglak [แมงลัก], Ocimum citriodorum.
=> don't know
it,but it's supposed to have a nice lime
flavour.
4. Tree basil, Ocimum
gratissimum. => don't know it.
(This is a hot basil used in some so called jungle curries)
Attribution: for the images and information above
There is a great confusion around Basils used in Thai cuisine. This is mostly due to the Aniseed flavoured basil, Horapha. There are 250 different cultivars of this basil type and only one that is the Thai Sweet basil. It is a cultivar of Ocimum basilicum. If you look at the image on the left the first column is a front and back view of the Thai sweet basil, Horapha the cultivar of Ocimum basilicum used in many Thai dishes such as green Curry chicken.
The Holy basil or Sacred basil is a spicy edged basil used for basil fried with pork dish, Phad Grapow Muu. This is possibly the most well known lunch dish in thailand. It's a dish that travellers are often introduced to and many like it so much that they rotate their meal selections around, Green Curry Chicken, Phad Thai and Phad Grapow Muu. The third column is the most commonly used basil in European cuisine. It also is a cultivar or Ocimum basilicum.
Thai Basil
(Horapa):
(Ocimum basilicum cultivar)
Perennial.

Thai
Basil, is one of the very few
perennial basils, while most other
varieties are annuals,
which you'll have to plant year after year.
Start
seed indoors four to six weeks before last frost. Fill flats with
equal
parts perlite, vermiculite, and peat. Press soil slightly to
eliminate
air pockets. Dampen soil.
Drop one to two seeds
into each container. Cover lightly with soil.
Cover
containers with clear plastic kitchen wrap and leave in a sunny
window.
Remove plastic wrap when plants emerge. Water lightly twice
daily.
Once
two sets of leaves have formed, basil can be planted into the
garden
or permanent containers. Basil does not tolerate frost so don't
plant
out too early.
Make plants bushy by pinching off
the top two pairs of leaves once a
stalk reaches a reasonable height.
The more you do this (without
overdoing it), the more new
shoots the plant will send out, becoming
bushy instead of tall and
sparse. You end up with more plant overall.
If
you're depending on a basil plant for cooking, don't let it
bloom!
When you see flower buds, pinch them and two pairs of leaves
under them
off. Flowers blooming create a hormone change which
dramatically
reduces the flavor of the leaves, as well as reducing
the amount of
foliage which grows.

Fenugreek:
(Trigonella foenum-graecum)
Annual.

Trigonella
is a genus of half hardy
annual herbs that reach from 30 to 60cm in
height. If growing for
culinary use then seed pods should be cut off
the plant once they
have ripened; allow the Trigonella seed pods to dry
in the sun, then
remove the seeds and store in a dry and airtight
container.
It
is best to sow Fenugreek seeds outdoors in the herb garden. Sow them
at
about 6mm deep into a warm soil in the middle of spring. It should
only
take a couple of days for the seeds to germinate; if
germinating
Fenugreek indoors then give them a temperature of about
20 to 25 º Centigrade.
Ideally Fenugreek (Trigonella) should be spaced at about 10cm apart and grown in an area that has lots of sun and a well drained soil that is rich and slightly acidic to neutral (pH 6 to 7). The plants take little looking after, give them a splash of water if soil becomes dry. If you require more Trigonella plants then it is best to grow from seeds.

Dill
(Antethum Graveolens)
Annual.

Dill is a
member of the Parsley
family, and grows from 18
to 42 inches, depending upon variety. The
most popular varieties are
24-36 inches. Dill are grown from seed.
Directly sow seeds into your
garden in the spring. Sow seeds early in
the season, and cover lightly
with soil. Space seedlings or
thin plants to 9" apart, in rows 12
inches apart. Dill is easy to
grow. They prefer full sun and a well
drained soil. They will do
well in average soils, and tolerate dry soil
conditions. Water them
during dry periods, once or twice per week.Add a
general purpose
fertilizer once or twice a season.
The
dark green leaves are called "Dill Weed". Harvest leaves at any
time.
The young, tender leaves are best for flavor. Harvest flower
heads
after seeds have formed, and the flower head has died. Tie a
group
of stems together and hang upside down to dry. Make sure to have
a
container or bag under them to catch seed. Once they are dry,
shake
out the remaining seeds.
Laksa leaf; Rau Ram:
(Persicaria odorata)
Perennial.

Easy to grow herb. There are many suppliers of the plant as a potted seedling. Seeds themselves are available but it seems as if you need to locate a specialist seed supplier.
The
plant likes a warm humid
environment ( tropical origin) . Simple to
grow, rau ram requires
regular trimming, part shade and more water than
it should given the
emptiness of our dams, but as a salad herb, it’s
delicious and that
alone justifies its presence . Given the right
moist, healthy
conditions rau ram, like mint, quickly becomes invasive.
Keep it
potted instead and vow to use it regularly. Amazingly, it roots
easily
if a sprig is placed in small a glass of water and left on the
windowsill.
It will die if the temp falls below 0C ( 32F) so it's a
bring
indoors winter plant. In the growing season water regularly in a
rich
open soil. Use Nitrogen fertiliser freely. At the end of the
season
it will probably need re-potting or at least dividing. It
rarely
sets seeds and for this reason the seeds are not commonly
available.
Fallen stems will simply strike and that's the natural
propagation.
Saffron:
(Crocus sativus)
Perennial.
Growing saffron is very easy, it is
disease and insect resistant, and
it requires little attention year
after year. Its requirements are
simple: Plant the bulbs (technically
they’re corms) in the summer,
harvest the stigmas in the autumn and if
you get around to it, divide
the plants every four years or so.
A
standard “starter kit” of 50 saffron bulbs will cost around $30, and
will
produce less than a tablespoon of seasoning the first harvest.
Each
year, though, you get more blossoms and more spice from these
bulbs,
increasing from one or two blooms per bulb the first year, to
eight
blooms or more by the third year.
Plant
the corms 6 in. apart and 3 in. deep in rich, well-drained soil.
Using
your 50 bulbs, this will create a saffron bed about 2 ft. by 5
ft.
As a bonus, you may plant this bed with summer annuals, while
the
saffron is lying in wait beneath the mulch for its autumn
growing
season.
Fresh
saffron threads can be used immediately for cooking, or they can
be
dried and stored. Drying the saffron threads is a simple process of
placing
the strands on a paper towel for several days in a warm, dry
place.
You should then transfer the dried saffron to an airtight
container
and keep it in on a cool shelf.
Cilantro:
(Coriandrum Sativum)
Bienniel.
The plant is called
Cilantro, while the seeds are called
Coriander. It is also
called Chinese Parsley...yes, it's a member of
the Parsley family. It
has parsley like leaves, and produces a
profusion of small, white
flowers the second year. Seed have a pleasant
odor when ripe, and are
sweet tasting. Cilantro grows up to three feet
tall. Cilantro plants
are grown from seed. Directly sow seeds into your
garden after all
danger of frost. Cover lightly with fine garden soil.
For a
jump start, sow a few seeds indoors in containers for
transplanting
later. Thin plants to 6" apart. Cilantro grows well in
full to
partial sun and a well drained soil. They will do well in
almost
any soil, and is tolerant dry soil conditions.
Water
them during dry periods, once or twice per week. Add a general purpose
fertilizer once or twice a season.
Harvest
flower heads after seeds have formed and the flower head has
died.
Extract seeds and dry them in a cool, dry location. Tip: If
growing for
seeds, replant every year for a continuous supply. Harvest
the
Coriander seeds in the second year, after the flower head has died.
Cut
the stems and tie together. Hang them in a cool, dry place to dry
out.
Make sure to place a container under them to capture falling
seeds.
When dry, place flower heads in a bag and shake to harvest
seeds.
Make sure seeds are completely dry before storing.

Cumin:
(Cuminum cyminum)
Annual.

Grown
from
seeds. It is
successfully grown in places like Norway so it does grow
well in the
north :) The plant is frost-tender, can take up to 4
months
from seeding to harvest, and likes warm to hot growing weather.
The
general rule for herb and spice plants is that their soil needs
are
not demanding, save that the soil must be very well-drained: few
herb
or spice plants can stand "wet feet". The soil should not be
particularly
rich, most especially not for flavoring plants we grow for
their
seed (or fruit), common mis-advice to the contrary
notwithstanding: a
rich soil will lower the concentration of the
"aromatic oils" that
give the seed its characteristic flavor, which is
the very thing we
are growing them for. Plants that are very slightly
nutrient-stressed
(which doesn't mean starved!) give better-tasting
seed.
Let
the seedlings stay quite close together, as that lets them support
one
another as their relatively heavy seed heads develop. Water very
well:
cumin likes a damp climate (but, as almost always with spices,
not
"wet feet"). Cumin is said to be "intolerant" of long periods of
dry
heat, misting could be wise in such periods.
The
availability of honey bees as pollinators will usually improve cumin
yields.
Cumin "seeds"
notoriously ripen unevenly, so you need to keep a close
eye on your
crop and harvest plants individually, lest the heads
shatter
prematurely. Let each plant grow till its first set of seeds
dries
enough to crack when pinched (it can take up to 120 days to
produce
mature seed; at that time, cut the plant. Hang cut plants to
dry over
a catch-cloth; when they are thoroughly dry, dump them into a
holding
bag (which you will later use for threshing them).
When
your crop is fully harvested, thresh the lot: beat the holding bag
in
which you have collected them against a hard surface to dislodge the
seeds.
Sift the loose seeds through a 3-inch mesh hardware cloth to
remove
the chaff. Make absolutely, positively sure the seeds are
thoroughly
dried before putting them away for storage (in the usual
manner
for dried herbs and spices: an airtight container stored in a
dark
place, preferably a cool one).

Curry (tree):
(Murraya Konegii)

This plant is well documented as causing a severe rash to some hypersensitive individuals similar to that seen with poison Ivy and Ruus leaf reactions.
Family:Rutaceae. Common name: Curry leaf. Native to India. Large shrub to small tree (2 to 5 meters). Pinnate leaves are used in many South Indian curries. Full sun or light shade. Fertilize with palm or citrus fertilizer to promote leaf production. Grows well in containers. Use a well drained potting mix. Can be grown outdoors in Southern California, South Texas and South Florida. Protect from freezing. Cover seeds 1/4 inch. Keep warm (above 75F). Seeds are fragile so handle with care. Seeds are shipped in moist peat-moss/coir mix and should be planted immediately. Some plant nurseries have these available occasionally so it may well help to speak to them and see what information they may have for availability.
There are a lot of anecdotal writings on this plant and it may be worth your while doing a search on the web to see what has been lucky or otherwise.
Thai aubergines
(Solanum melongenum; S. xanthocarpum)
Annual.

In the Northern Hemisphere, (spedifically Europe and the USA), Thai aubergines will probably be the most difficult and finicky of all these exotics for cultivation. Still quite possible but requires extending the warmth for fruit production so that you can provide 15 weeks of continuous "warm weather". This requires production of seedlings then a subsequent transplant of the seedlings. The most scientific reviews suggest a 4 to 6 week period as seedlings followed by a nine week period of outdoor planting. In the northern hemisphere this corresponds to a seed planting at mid-May. Transplanting into the beds on the 1st July.
In the USA and Europe, the beds should be prepared on the 15th June. prepare using large amounts of organic material so that the beds are raised, rich in humus and well drained. The best recommendation is to cover the beds in black plastic mulch. You need to keep the bed warmth up and tips for this include the use of plastic milk bottles filled with water and set up amongst the seedlings. For watering the plants the University of Louisiana recommends drip irrigation as the plants are sensitive to water stress. Plant spacing of 18 inches is recommended.
The fruits should be picked as they become ready, judged by size as the fruits are relatively heavy. A suggestion is no more than four fruit per plant to ensure good development and proper ripening. It may be good practice to support the branches of fruit bearing shoots.
The Purple aubergine pictured above, is not one of the Thai kinds. This in fact is a Chinese variety

Pea aubergines: (ma khuea phuang) มะเขือพวง
(Solnum torvum)
Annual.
These may also be known as Turkey Berries. Presumably a US regional colloquial name. If anyone has information on this plant I would be most grateful for your input.
( Little I can locate on this variety specifically. It seems that it grows wild in some parts of north America and possibly in semi arid regions? I would be tempted to follow the recommendations for Thai aubergines. )
Turmeric:
(Curcuma domestica)
Perennial.

Turmeric needs rich moist soil, ample water and a warm, sunny location. In cooler climates it can be grown in a greenhouse or conservatory. It needs generous feeding, preferably with animal manure. Plant the rhizomes in spring and lift them around 7 months later or when the lower leaves begin to yellow. Choose pieces of rhizome with healthy buds to replant for next year's crop.
A large-leafed tropical plant belonging to the Zingiberaceae (Ginger) family that grows from a brown rhizome with bright yellow flesh. The plant grows to about 1m tall and bears white to pale yellow flower spikes. The yellow tubers are the source of the pungent spice
Pandanus:
(Pandanus amaryllifolius)
Perennial.

Unless you live in a sub-tropical to tropical region then you will have to source you Pandanus through a nursery. They can grow in a pot successfully but the critical temperature cut-off is zone 9 or 10. They must be kept above this at all times so it means either bringing them inside or placing them in a green-house. They shouldn't be waterlogged and should dry between waterings. Winter watering is minimal. Transition from winter inside to summer outside should be done cautiously because of leaf burn. They need some time to adapt.
Cardamon.
c. elettaria, c. amomum
Perennial.

May be grown indoors in pots. It is possible to grow from seed but difficult. Seeds from from those supplied as spice are not fertile as they are harvested when unripe and dried.
Fertile seeds need to be pretreated
either by scarification or by gentle nitric acid hydrolysis.
The most successful method is by plant division and re-potting. The potting soil should be predominantly compost as normally the plant is a jungle ground plant.
The plants doesn't like drafts or temperature change. For home cultivation your best choice is to grow them in a warm, humid and shady place. A bathroom may approximate this. It is recommended to grow the plant set on a bed of pebbles in some water. The pot should not be in direct contact with the water it is a ploy used to maintain high humidity only.
Feeding is recommended during the active growing period using a high nitrogen, low potassium fertiliser. The plant is not susceptible to pest infestation. Brown leaves is almost certainly a sign of over-watering. Watering should be limited to twice weekly maximum.
Pepper
(Piper nigrum)
Perennial.

Black
pepper
is a tropical
vine with attractive heart-shaped leaves, which needs to
be
grown indoors in the UK. With patience and good cultivation you can
grow
this as a houseplant to produce your own peppercorns.
Pepper will not survive out of doors even during
the summer in
non-tropical climates. Usually propagated by seed. Sow
the seeds in
offsets from an established plant. The plant needs
several years
growth(? 4) before it will be mature enough to fruit.
Pepper doesn't
seem to be prone to pest attack so it's usually
healthy. Even aphids
dislike the taste of the leaves.
Seeds and plants are available from a few nurseries.

Keffir Lime Tree
(Citrus hystrix)
Perennial.

The Keffir lime tree is a
dwarf
citrus so size-wise ideal for indoor cultivation or green house
growing.
Best grown indoors in temperate climates. Cultivation from seed
is
unreliable so you are encouraged to find a supplier of a grafted
tree
preferably a year old.
Pot up the plant into a 16
inch plastic or foam pot with a good
drainage bed,. Potting
soil should contain ~25% compost mixed well with
approx half a
cup of slow release fertiliser. Bury the roots completely
with
the soil mix. water in well. Place the plant near a window but
not
over heating/cooling vents. Good air circulation. Check soil
moisture
regularly and don't over-water. Misting of the leaves is
recommended.
The plant requires acid soil so to maintain this
you need to add 1/2
teaspoon of Epsom Salts (Magnesium
Sulphate) dissolved in a quart of
room temp water and add this
to the soil every two months. The plant is
not noticeably pest
problematic but be vigilant and keep the tree away
from other mite or
scale infested plants.
To set
fruit from blooms your best bet is to take the plant outside
when
flowering and let the insects do their work. of course if
you are
passionate and skillful then you can pollinate adjacent
flowers with a
soft mini-brush.
Garlic (Thai):
Annual.

Thai garlic is a cultivar. It is smaller in size with multiple segments covered in a purple skin. It's easy to eat Thai garlic fresh and has a milder flavour than many of the European and other Asian varieties. The growing of Thai garlic is the same as for other varieties. Sadly Thai garlic is being replaced in it's own country by cheaper imported varieties because of FTA agreements with China and is causing some economic hardship to the farmers in the north who traditionally grew this crop along with tobacco. Now both reducing in their demand.
Unfortunately emotive and unsubstantiated statements from peoples like Kingkorn Narinthornkul na Ayudhaya of FTA Watch. "Thai garlic is better in taste and medicinal properties, such as preventing cancer"... . Do nothing to help the crisis in fact probably turn people away.
There are a bout 600 cultivars of garlic some naturally occurring and some through millenia of cultivation. Just try growing the plants from the sections as you would any garlic and see what happens. If unsuccessful suggest you use commercial garlic.

Star Anise:
(Illicium verum)
Perennial.

Can be propagated from seed or layered
cuttings.
By
seed it does not require pre-treatment and can be sown in early
spring
in a greenhouse. Prick out the seedlings into individual
pots
when they are large enough to handle and grow them on in the greenhouse for
at least their first winter. Plant out in late spring or
early
summer, after the last expected frosts, and give some protection from
the cold over the winter for the first year or two.
Prefers
a
light, moist well-drained loam and a sheltered position, a humus-rich
lime-free
soil. Succeeds in sun or semi-shade. This
species is
not
very cold-hardy, it tolerates temperatures down to between -5 and
-10°c
and requires a very sheltered position or the
protection
of a
wall when grown in Britain. The plant typically reaches a height
of 3
m in the UK but 8 m in it's indigenous grounds. The
seeds are
harvested in October in the northern hemisphere.
Chinese Celery
Annual.

There are a number of cultivars of Chinese celery and the flavour is considerably stronger than "normal" celery. The plant is smaller with thin hollow round stems and the leaves look like cilantro. Often the roots are sued as well as the stems and leaves. Celery has a very high allergic reaction and is well documented for causing anaphylaxis in the sensitised individual. Chinese celery grows best in a cold climate, 60-75 F. Plants may need shading if grown in warm summer season. Seeds are very small and seed generation can be erratic. Several unique characteristics are observed for the seed germination - germinating best in cold condition (50-60 F) but poorly in higher temperature; germinating best with seeds uncovered and in the light. Soil should be kept moist during the seed germination and seedling growth stage.
Fennel.
(Nigella Hispanica)
Perennial.

Fennel is
easy to
grow
and very hardy, lasting well after the first frost. With bright
green,
fern-like leaves and aromatic yellow flowers, this plant will
grow
three to four feet tall. Foliage and seeds have an anise-like
flavor.
Fennel are grown from seed. Directly sow seeds into your garden
as
early in the season as the ground can be worked. Sow seeds early in
the
season and cover with 1/4" of soil. Space seedlings or thin
plants
to 10-12" apart, in rows 18-24 inches apart.Start a new
planting in mid
summer to harvest in the autumn. They prefer full
sun and a well
drained soil. They will do best in rich
soils.Water them during dry
periods, once or twice per week. Add a
general purpose fertilizer once
or twice a season.
Harvest
leaves as at any time. Harvest flower heads after seeds have
formed
and the flower head has died. Extract seeds and dry them in a
cool,
dry location. Harvest bulbs when they reach tennis ball size or
bigger.
Pull every other one out as needed to allow those remaining to
grow
even bigger. Do not pull these plants up in advance of the first
frost.
They are very hardy and should continue to thrive and grow, even
after
a number of hard frosts.
Caraway.
(Carum Carvi)
Perennial.

Caraway
does not
produce
flowers until the second season. Once it does bloom, the
flowers are
loaded with seeds for drying. You can use the leaves as
soon
as the plant gets big enough to produce enough to meet your
cooking
or garnish needs. Caraway grows about 1 1/2 to 2 feet tall.
Caraway
are grown from seed. Directly sow seeds into your garden and
cover
lightly with soil. Space seedlings or thin plants to 12"
apart
in rows 12 inches apart. Caraway prefers full sun and
a well drained
soil. They will do well in average soils and
tolerate dry soil
conditions. Water them during dry periods, once a
week. Add a general
purpose fertilizer once or twice a season.Plant
these biennials in an
area of your Herb garden where they will grow
undisturbed, and not be
in the way when it is time to plant your
annual herbs next spring.
Harvest
leaves as soon as there is enough to meet your needs. Harvest
flower
heads after seeds have formed and the flower head has died. Cut
back
stems and tie together. Hang them upside down to dry with a bag
or
pan under them to catch falling seeds. Shake the bundle to
extract
remaining seeds.

Watercress Herbs
Perennial.

Watercress is a
dark green, leafy vegetable with a zesty pepper-like
taste. It
is an aquatic type plant and is related to the Nasturtium
family.
Watercress is grown along creeks and stream-beds. Plants grow
partially
submerged. Watercress produces small white flowers all summer
long.
Watercress grows in rich soil along stream-beds and creeks. Plants
grow
partially submerged in shallow water. Plants should be in full
sun.
Cool weather is best. Watercress is grown from seed. Start plants
indoors
in rich seed starting soil. Keep soil moist. Transplant
seedlings
outdoors along slow flowing creek-beds.
Harvest leaves and young stems before the
flowers bloom, as it becomes
too bitter and pungent to eat. Cut
leaves,wash and dry them, and store
in the refrigerator.
Anecdote: I have
successfully grown this
in the tropics in both a sealed terracotta 8 inch pt and an ice-cream
container. The only maintenance is water top-
up with
rain-water if available and tap-water in the dry season and an
occasional thinning.
(Wasabia japonica)
Perennial.
There are other species and various cultivars of the one species. Growing requirements are fairly similar.



Wasabi can be grown in our own gardens. It is successfully grown in the US for commercial application. The best Wasabi is grown from direct water feeds from clean mountain streams without any addition of fertiliser or other additives. Having said that hydroponics is now being used for commercial production to increase the output and the economics of production. Tissue culture has been used for a few decades very successfully and is a very effective way to prevent disease spreading throughout the genome. Seed cultivation is used on a cycle every few years to maintain disease freedom and genetic integrity. It's a very well studied plant both scientifically and industrially.
Home gardeners can certainly grow the plant by hydroponics if they are set up for this. Seedlings are available as tissue cultured specimens and thus are guaranteed disease free so easy to import. Seeds may be available from people in the know and if this is something you wish to pursue there is the internet resource and searches for who has seed supplies, the other less obvious resource may be your Japanese restaurant or store proprietor or family. It may be worth the effort to inquire.
As
a native to
Japan (hence the name Japanese horseradish) these tubers
can tolerate
most conditions but prefer shaded, well-drained areas for
success. Yet while light isn't a big factor in their growth,
water is. So, if you have any damp, shady areas within your
vegetable patch then you've found the ideal tenant. It generally
requires a climate with
an air temperature between 8°C (46°F)
and 20 °C (70°F), and prefers
high humidity in summer. Since it is
quite intolerant of direct
sunlight, Wasabi is typically grown under
shade cloth or beneath a
natural forest canopy.
Wasabia japonica
plants are slow growing perennials with
a rooted, thickened
stem (rhizome), long petioles and large leaves. All
parts of the
wasabi japonica plant, including rhizomes, roots, stems
and leaves
are harvested, processed and valued for use. The rhizome serves
as storage for
the plant’s nutrients (similar to a potato) and
is where the flavors
tend to be most concentrated. The appearance of
the wasabi rhizome is
similar to a "brussel sprout" stalk after the
sprouts are removed. The
long stems (petioles) of the Wasabia
Japonica plant emerge from the
rhizome to grow to a length of 12 to
18 inches and can reach a diameter
of up to 40 mm (1 ½
in). They terminate into single
heart shaped leaves that,
in optimum conditions, can reach the size of
a small dinner plate.
It can take 18-24 months or longer before the root is of a size worthy to be dug up.
The preparation of the
wasbai for eating is to grate it with
an ultra fine
grate. In the picture above they have used a steel grater
but the
purist uses a shark skin grater which is believed to give a
more
homogeneous product. The grated material can be dried but the
flavourings
are very volatile so you lose a lot of the tang when dried
like this.
Commercially wasabi is available as a pungent powder which you mix with
water
to produce the edible pate. The production of the powder is a
carefully
controlled process and does give a product identical to fresh
wasabi.
There are however a lot of faux wasabis in the market place
probably
simply replacing the wasabi paste with horseradish and an
appropriate colourant.
Asafetida
(Ferula assafoetida)
Perennial.

Asafetida
is a giant fennel native to Afghanistan and India with a
notoriety to match its size. Actually, the plant itself is a rather
attractive ornamental in the garden; it’s the nasty smell of the
oleoresin harvested from the roots that probably gave rise to its
alternate name devil’s dung. (Asafetida and assa-foetida mean “stinking
resin”; Ferula simply means “giant fennel”.) This unlikely “food of the
gods” was esteemed by the Romans and is today highly regarded in India
as a condiment, thought by some to stimulate the brain. Only a tiny
piece of the resin or a speck of the powdered form is needed to flavor a
batch of pickles or a dish of vegetables or dal. The penetrating,
rancid, garlicky-onion smell (which becomes overwhelming when the resin
is ground) and sharp, bitter taste are mellowed and made more palatable
by frying the ground asafetida in oil, and in that form it is often used
as a substitute for onion or garlic. To avoid contaminating
other foods with the odor, store asafetida in resin form in a
tightly closed glass jar. It will keep for years.
The
herb is hardy at least to Zone 6, making a striking clump of robust
stalks up to 6 feet tall. Give it plenty of room. The leaves are ferny
and fennel-like. The flowers, in numerous small umbels, are yellow. A
purchased plant may bloom the first year; plants grown from seed may
take a couple of years to flower. For good germination, sow fresh seed
in deep pots in autumn, and winter them in a cold frame or refrigerator.
Germination is usually low and may take three to four weeks, so be
patient. Asafetida grows best in moist, fertile soil in full sun. Plants
have long taproots, and large specimens are thus difficult to
transplant. Mulch well and water during dry periods. In cold regions,
mulch the crown thickly in winter. The asafetida resin is obtained by
slashing the roots of mature plants before they flower in summer,
waiting a few weeks for the milky sap to ooze out and harden, and
scraping up the resulting reddish resin.

Sesame
(Sesamum indicum)
Annual.

How
to grow Sesame:
The seeds of Sesame, Benne and
other Sesamum should be sowed outdoors at a depth of 6mm about 25cm
apart. Do this towards the
end of spring when
temperatures remain above 15 degrees at night. It should take about a
week for the seeds to germinate once
temperatures reach
20 to 30 degrees. Ideally the sesame plants should be grown in a sunny
area that is well drained; the soil type is not
important.
If
you plan to start indoors then sow about 2 months before due to be
transplanted outdoors (end of spring).
To
harvest Sesame seeds, the stalks should be cut off when the top seed
pods have turned green, but before the bottom pods have opened
(try
to cut the stalks when it will result in a better harvest). The sesame
should then be put into a paper bag and allowed to air dry. Rub
the
bag to release the sesame seeds, and store them in a resealable
container..

(Papaverus Somniferum)
Annual
It is illegal to grow
Papavera somnifera poppies
anywhere in the world for the purpose of producing opium. In many countries it is illegal just to cultivate the plant. The control schedules are country specific.
Poppy
seeds for culinary purposes are seeds from P somniferum grown with
permit but have been sterilised by radiation. These seeds are commonly
available for purchase through many retail food outlets. Dried
poppy heads for decoration are available
by mail order through a
number of outlets online.
Generally speaking growing
opium poppies can be grown anywhere. As poppy seeds are very small it can
take anywhere from four days to three weeks for apparent germination. The soil showing the best germination and growing aspects is an acid non-compacted soil.
Dry climate areas need water on a regular basis. Although seeds come in many colours, the colour of the seed does not specifically relate to the color of the flower or pod. Beans, cabbages, cotton, parsley, spinach, squash and tobacco are crops that can typically be planted with the poppy. Because the seeds are so tiny some farmers use fine sand to mix in with the seeds so as to space out the seeds a little more.
The best time to start growing opium poppies and plant the seeds is right after the last snow melts or in the first part or March (in the northern hemisphere and September in the southern hemisphere), whichever comes first. Alternately planting half the seeds in the late autumn and half the seeds in the early spring. Although the optimal germination temperature is about 14 Celsius or just below 60 Fahrenheit, the seeds will germinate at temperatures both lower and higher. After the growing opium poppies are first seen and the sprouts begin to grow, the best time to water is in the afternoon or morning.
Due to their roots being
very small and weak, professional spray watering system is the method
of choice. The soil moist but not too wet. Simply put poppies like as
much sun as possible, so they are cultivated in an open field where they
will get maximum sun.
The growing opium poppies
prefer their soil to stay slightly on the acidic side. For fertilizer a
good miracle grow 30-10-10 mix once every two weeks will work well.
When the plants are ten inches the fertilizer is ideally switched to a
liquid fertilizer, such as a fish fertilizer. When the flowers are about
to bloom, a standard 10-30-20 fertilizer or a special blooming
enhancement fertilizer for extra vivid colours.
Growing
opium poppies without a permit is illegal in most countries and if
not illegal to grow certainly to harvest the resin (opium) is. You are
not likely to be able or eligible for a permit to grow opium
poppies for any reason. In many countries growing opium poppies
without a permit is a very serious offence and you almost certainly
would not be allowed to grow it for domestic culinary use.
Tamarind.
(Tamarindus indica)
Perenniel.

The
tree can grow to a maximum height of 25m and a crown diameter of12m. It
is a big tree when mature but it tends to be a slow grower. It can be
successfully grown as a fruit producing bonsai. Tamarind can tolerate
5-6 months of drought conditions, but does not like fire, frost or
waterlogging.
There are different varieties of tamarind, e.g.
cultivars ‘Sithong’, ‘Piyai’ and ‘Jaehom’. The varieties can be divided
into ‘sweet’ and ‘sour’ types. Thailand grows the sweet type for
culinary use. Other countries around tend to have the sour varieties.
Seed
propagation involves the collection, preparation and direct planting of
the seed into soil/compost. This method is very simple, however the
quality of the new offspring cannot be guaranteed (not true-to-type)
and the time taken for the tree to reach bearing age is usually
longer than for trees propagated using vegetative methods. Seed
propagation is very simple. Plant the pre-soaked seeds in an open mix
and allow to germinate. When large enough transplant. The tree itself is
cold intolerant and will die if affected by frost.
Vegetative
propagation is the most reliable way of growing the tree it requires
specialised skills. Nurseries may carry small trees suitable for
your growing either as bonsai, potted or planted.

Rice Paddy Herb
{Limnophila aromatica (synonym: Limnophila chinensis var. aromatica)}
Perenniel.
Rice Paddy Herb likes two things, high humidity and heat. It will wilt down and die quickly if it does not have a high humidity at all times. This is the secret of growing this exotic and wonderful addition to your food. Pot the herb up in rich moist, but not wet potting soil. Keep it where it receives indirect light and a large clear plastic bag over the pot will assure the high humidity the plant requires
The Rice Paddy Herb can be obtained from many oriental markets that caters to Vietnamese a
nd/or Cambodian customers. A piece placed in half a cup of water in a plastic bag will root easily within a few days. Transplant the herb into a pot as described above and soon you will have more herb than you can use. When you cut the herb for use, be sure to move the harvested herb around in a large pot of water to remove grit and dirt. Do not just rinse the herb under the faucet as this will not remove the grit that seems always to be lodged deep in the swirl of leaves.

Mustard Greens and Seeds
(Brassica nigra; Brassica juncea; Brassica hirta/Sinapis alba)
Annual
Sowing Mustard Seeds:
Sow mustard seeds 5mm - 6mm(1/4 to 1/3 in) deep, and 7 cm (3") apart. Thin seedlings to 12 cm - 20 cm (5" - 9") apart. Separate the rows, 30 cm (1 foot) apart.
Sow seeds early in the spring and a second crop in the early fall. They prefer cool weather, so leave the middle of the summer for the heat loving vegetables. The plants mature within 45-50 days
How to Grow Mustard:Mustard plants grow well in most good garden soils. They prefer full sun and cool weather. Planting successive small crops, separated about a week apart, results in a continuous supply of greens.
Mustard plants should be grown quickly. Use plenty of water, and ample amounts of fertilizer, to promote fast growth of tender, green leaves. Water plants during dry periods. Keep the plants well weeded, so weeds do not compete for water and nutrients. It makes harvesting easier, too.
Harvesting:
Mustard greens are eaten raw, pickled or cooked. Harvest leaves while young and tender. Pick individual leaves, or the entire plant. Leaves get tough and have a strong flavor during hot, dry weather. Mustard seeds should be harvested when the plants begin to yellow. You want to leave them on the plants as long as possible, but before the pods burst open and spill their seeds.
Insects and Pests:
Aphids and cabbage worms are common problems.
Disease:
Mildews can affect the plant. Promote fast growing, healthy plants, so they will be less susceptible to disease. Allow proper spacing to increase air circulation. Avoid watering towards evening.
Hardiness:
Plants grow best in cool weather.






