Seed info Sheet

sowing seeds data / JansTrumpetGarden

 Available Seeds:

Datura Metal

Datura White

Passiflora 'Lady Margaret'

Passiflora vitifolia"Crimson'

Passiflora 'Blue Bouquet'

 

Acacia Baileyana - Golden Mimosa
Seed germinates best if given hot water soak or use scarified seed.  Place seed in near boiling water, soak for 24 hrs then sow.  Any floating seeds need additional hot water/soak treatment.  Sow seeds 1/8" deep, germination 2-3 weeks at 70-75 degrees F. Cold hardy to 18 degrees F

Aztec Nicotiana
Seeds are very small and so need light to germinate, meaning just sprinkle them on wet planting medium and lightly press them in. Put in indirect light with bottom heat (like a heating pad set on medium) to germinate in 10-20 days at 70-75F/20-25C. Keep moist by using a fine mister or watering from the bottom (put the pots in water for 1/2 hour and remove); otherwise, the seeds will be swamped. Once they are up, lower temps to 65F/18C. Transplant when they get their first set of true leaves (second set of leaves), gradually hardening off to plant in full sun when outside temperatures are warm.

Bamboo Palm
These palms grow well indoors, though clump-forming ones will need larger containers. Keep them out of direct sunlight, which can burn the leaves. Outdoors they need well-drained, friable acid soil and a cool root run. Plants of both sexes are needed for fruit. Propagate by seed which will germinate in six to eight weeks in warm conditions. Clump-forming species can be propagated by division 

Beautybush
Cold stratify for 3 months. After stratification sow 1/4 inch deep in sterilized gardening soil and place container at about 70 degrees. Some seeds may germinate within a few days, but germination tends to be sporadic and may occur over an extended period of time. Keep soil moist at all time. After germination seedlings need bright light and cool enviroment. Alternatively seeds can be fall sown for germination in spring.

Bird's foot
Pre-soak the seed for 24 hours in warm water and then sow in the spring or autumn in situ. The seed usually germinates in 2 - 4 weeks. If seed is in short supply, it can be sown in pots in a cold frame. When they are large enough to handle, prick the seedlings out into individual pots and plant them out in late spring or early summer.

Black Cohosh
Sow seed in containers in an open frame in fall or spring. Grow in moderately fertile well-drained soil in sun or partial shade. For maximum freshness, please keep seed refrigerated in its original packaging until it is time to plant. Lon germination process.

Blue Jacaranda
Soak seeds over night and sow 1/16" deep by 70=75 degrees. Germination occurs in 2-4 weeks.

Brugmansia & Datura 
Both brugmansia and datura are fairly easily grown from seed. Soaking the seeds overnight in hand-hot water is often beneficial. Sow the seeds in a good soil mix, and barely cover them with soil. Mist the soil heavily, and cover the container with a clear plastic dome. (A sheet of clear plastic will work, but an actual dome is better. Place the seed tray in good light, and if bottom heat is available it will be helpful. Check often, to be certain that your soil doesn't dry out. If there's condensation on your dome, it's plenty wet---don't water again until this clears up, because too-wet seeds can rot or develope fungal diseases

Butterfly Pea
Pre-soak for 12 hours in warm water and sow in a greenhouse in the spring or put them into a zip-closed plastic bag with soil for better germination. Prick out the seedlings into individual pots once they are large enough to handle and plant out in the summer.

Butterfly flower (weed) & Bushes
Place the seed in a bag of moist peat moss and keeping it in the refrigerator for ten to twelve weeks. Older seed will not require this cold period to break its dormancy. Direct seed butterfly weed outside, or grow the seedlings in a nursery bed until the plants have five or six leaves, at which time it should be moved to its permanent location. Give the seed proper attention while it is germinating; though the mature plants will tolerate somewhat dry soils, the seedlings need to be kept moist until established. Fall-grown plants will provide moderate bloom the following year, with improved bloom in successive seasons.
If you prefer, you can start butterfly weed in the spring. Follow the same procedures as for fall sowing. Butterfly weed requires winter cold to bloom, so spring-sown plants will not bloom their first summer. However, the long summer days will allow the seedlings to grow into large plants which will produce many blooms the following year.
(I planted mine last year in spring and they bloomed in summer, however)

Calendula
Sow your seeds in the early springtime (when soil temperature has reached 60 degrees F) and sprinkle soil lightly over the seeds. The seeds should germinate after about 2 weeks. Each plant or seedling should be separated by about 10 inches. Harvest your calendula flowers as they open. If you leave some of the flowers open, this herb will reseed itself.

Canna
Cannas have an extremely hard protective seed coat that is impermeable to water. You can help the germination process by removing a bit of the seed coat through a process called scarification. Prior to planting, take a piece of sandpaper and sand the end of the seed until you get through the black seed coat. You'll know that you're through when you see the white endosperm. Basically, what you're trying to do is make a hole in the seed coat so that water can get through.
Once canna seeds have been scarified, they are easy to grow. Sow them a quarter-inch deep in a tray of vermiculite 8 to 10 weeks before your last frost date. Keep the vermiculite moist and the room temperature between 65°: and 70°F during the day and at 60°F overnight. The seeds should germinate in about one week. When the seedlings reach about 6 inches tall, transplant them into individual pots filled with a premoistened, well-draining potting soil. Add a granulated organic fertilizer to the potting soil (follow application recommendations on the fertilizer label). Keep the potting mix moist but not wet, and place the plants in a sunny (southern exposure) window. As the plants begin to actively grow, the soil will dry out quickly, so check daily and water when needed. Gradually harden off the cannas and transplant them outside, adding plenty of compost to the soil, following the last-frost date.
Keep in mind that most cannas are hybrids bred for their flamboyant blooms and foliage. Seeds from hybrids will not come true to type, which means they will exhibit characteristics that are different from those of the mother plant (but not necessarily unattractive). If you're feeling a bit on the wild side and don't mind growing a few mystery plants, go ahead and start cannas from seed. If you want exact clones of your canna plant, you'll need to propagate by division.

Cassabanana
With well draining soil mixture plant the seeds at a 3/4" depth. Keep constantly warm and lightly moist with high humidity. Bright light.

Castor Bean
Soak seeds in warm water for 24 hours. Plant seeds after all danger of frost 1 inch deep in a sunny location. Germination needs appr. 4-6 weeks.

Cathedral Bells
To get a jump on the season and ensure a long period of bloom, it's best to start them indoors six to eight weeks before the last frost. Plant seeds in containers and keep the soil warm; use a heating cable if possible or set containers in a warm place such as on a hot water heater. Once seeds germinate, provide plenty of light. When seedlings are ready to transplant, slowly acclimate them to outdoors by gradually exposing them to stronger light over a period of about a week.Plant them in full sun unless otherwise noted; transplant carefully to avoid disturbing the roots. Provide support. Large vines, such as cathedral bells need sturdy supports.
 

Chinese Love vine
Seed should be sown in a well-drained soil mix and barely covered. They should germinate in 21-30 days at 65-70° F 

Chinese Pagodas
Hardy annual. Height: 16-24". White lavender blooms. Surface sow at 50-60 degrees Fahrenheit. Germination 2-3 weeks. Start inside for earlier blooms and sow outside after all danger of frost.

Chocolate vine
Best sown in a cold frame as soon as it is ripe. Surface sow in a light position. The seed usually germinates in 1 - 3 months at 58 degrees. . When large enough to handle, prick the seedlings out into individual pots and grow them on in light shade in the greenhouse for at least their first winter. Plant out in late spring or early summer, after the last expected frosts.

Clematis
Sow seeds surface of lightly firmed, moist seed compost in pots or trays and cover with a very light sprinkling of compost or vermiculite. Seal container inside a polythene bag and keep at a temperature of between 59-68 degrees, or place in a cold frame or sheltered position outdoors. After sowing do not exclude light as it helps germination. Keep surface of the compost moist but not waterlogged. Germination can take 1 to 2 months and can be erratic.


Cleome Spider Flower
Germination requires warm temperature. Mid spring is the best season for seeding if you grow cleomes outside, however you can enjoy the flowers longer if you start them inside when it is still cool in early summer.
Because their single root grow long and straight and they do not like to be transplanted, it is recommended to plant them directly. Spacing
is required when they are about 1inch  tall. Because they grow big, it is proper to keep 2 or 3 of them in a large container.

Cockscomp
Celosia does best in warm or tropical climates. Full sun is a must, and you'll get the best results in well-drained soil enriched with compost. Start seeds indoors in spring, then transplant when the seedlings are large enough to handle and danger of frost has passed. Seeds can also be sown directly outdoors. Space tall forms 12-15 inches apart, and dwarf forms 6-8 inches apart. Keep the plants well-watered until the plants are established, then reduce to once a week unless the weather is very hot. The plants tolerate dry conditions well. You won't need to add supplemental fretilizer if the soil has been well prepared with compost.

Coffee
Plant at 3/4" depth using well draing soil mix. Keep warm & damp and in filtered sunlight. Needs air circulation - do not cover with plastic

Coleus
Sow surface at 65=70 degrees and cover very slightly with soil. Exposure to light, but not in direct sunlight, and keep moist. Germinates within 2 weeks.

Cup & Saucer
Sow direct outside in fall or spring. Don't cover seeds with soil, they need light to germinate. Sow 12-18 inches apart. Germinate in 1-2 weeks.

Desert Rose
Scatter seed into a mixture of sand/soil or cactus soil. Seeds germinate easily, and seedlings grow without any special attention. Needs full sunlight and temperatures not below 55 degrees. Do not overwater and let dry out before watering again. Blooms in spring and fall.

Edelweiss
Sow seeds surface at 65-72ºF. Light needed for best results, germinates in 5-10 days. Easy.

English wall flower
Sow seed directly outdoors after all danger of frost has passed. For earlier blossoms start seeds indoors 6-8 weeks before setting out. Cover seeds with 1/8" of fine soil firmed down. Thin or transplant seedlings to 1 foot apart outdoors.
GERMINATION: One to two weeks at 70'F. Keep soil moderately moist during germination

Four o' clock
Sow seeds directly into the garden just before the last frost in your area. Cover seeds with 1/4" of soil. Space plants 12 inches apart and thin to two feet apart. Four O'Clock prefer full sun, but will tolerate partial shade. Note that in partial shade they may grow lanky. They will do well in rich, well composted soil as they are big eaters. Keep soil moist. Add a general purpose fertilizer once or twice a month to encourage vigorous growth.

Gardenia
Sow 1/8" deep at 75 degrees F. Keep moist and damp by covering the pot with a plastic sheet. Germination occurs between 21 - 60 days. Gardenias should be planted in well conditioned soil containing peat moss and compost Cultivating around the plants may damage their shallow roots, so the plant should be mulched with 2 to 3 inches of wood chips, sawdust or ground bark to keep the soil moist, cool and weed free. Feed the plants every three weeks during the growing season with a rhododendron-azalea food, or acidifying fertilizer. (Miracid)
Proper temperatures are necessary for a gardenia to bloom. This is the most critical aspect. Flower buds will fail to form if day temperatures are higher than 70degrees or night temperatures are over 65 degrees or less than 60 degrees. The ideal temperature ranges would be 65 to 70 degrees during the day and 60 to 62 degrees at night.

Gazania
Sow January for pack/pot production flowering late April - May. Sow end of February to March for summer planting. Sow at 20°C Cover with an average layer of vermiculite/seed compost. Germination usually takes 1-2 weeks.

Ginger
The small seeds are slow germinating - up to 8 weeks depending on the soil temperature. Plant at 1/2' depth using soil mixture. Be sure they are kept warm - 70 F degrees is ideal. Provide bright light and high humidity (by covering the pot with a plastic foil).

Gladiolus
Sow seed surface in late winter or early spring indoors (February to April) and given heat (about 70 degrees Fahrenheit) and consistent moisture until it germinates (in about 20 to 40 days). Then transplant to it's final location.

Glory Lily
Avoid cold temperature. Keep warm and damp and in bright light. Plant at a depth of 2" using well draining soil mixture. Fertilize weekly using a balanced fertilizer ( a houseplant fertilizer ).

Golden Rain Tree
They can be sown in a cold frame in the late fall. (You may also simulate this by soaking the seed, placing it in soil, and putting the container in the refrigerator for three weeks.) Then you can place the container in a sunny window and watch your golden rain tree grow.The golden rain tree is no small tree; it can reach 30 feet or more. So place these trees in well-drained soil and full sun and let them reach their full potential.

Guava
Lightly cover with sand/compost soil mixture, keep warm, damp and in bright light. Fertilize lightly each week.

Hibiscus (hardy)
Seeds can be sown in drills 1 inch deep in light soil in May or June. The seedlings are transplanted, 6 inches apart, in a nursery bed and set in their final positions in the fall. They may also be divided..

Hollyhock
Cover with a layer of soil as thick as the seed's diameter.  Daytime temperatures of 68F/20C are best for germination.  Keep moist but not soppy.  It should germinate in 1-2 weeks.  You can also plant directly outside two weeks before the last frost date.  It likes a sheltered (not too much wind), sunny site and rich soil. It does not like extreme heat, as in south Florida.  If grown there, try planting it on the north side of the house and not in full sun. It usually spends the first year making a rosette of leaves and forming a sturdy root, then in the second year a large spike will shoot up 5-8 feet and will start blooming, but sometimes you will get lucky and it will bloom late in the first year.  If you pinch it back as it is growing, it will get more branches and thus more flowers.  Or you can just let it go to its full, regal height.  Single stalks are very impressive.  Mulch at least four inches deep to protect in winter, although if you get heavy snow cover all winter, you don't need to.  They like to reseed themselves

Hyacinth Bean
Grow in mid spring 1/4' deep. Tolerates drough and poor soil. Grows in sunny and partial shade location.

Jiaogulan
Easy to germinate. Cover slightly with soil and water regularry. Should germinate within 4 weeks.

Kiwi
Sow seeds at least 10' apart from each other. Kiwis can be grown in any soil and are hardy to 5 degrees, need a sunny location. Young sprouts however need to be protected from frost. The best is to plant them in  a pot and take them indoors in winter until they are 1 year old. Fruits delvelop after 3 - 5 years, if you have a male and a female plant. One male plant can pollinate up to 8 female plants. Female blooms have the white center filaments, male blooms have a yellow center.

Kudzu
Plant 1/2" deep in sand/loam mixture, keep warm and damp. Needs bright light to germinate.

Lilac
Soak seeds in room temperatur for 24 hours. Cold stratify for 8 weeks. Then sow 1/4 inch deep in quality gardening soil and place them in room temperatur  until they germinate (4 days-5 weeks). Keep soil moist. After germination grow seedlings under growlight or on a sunny window. Keep them inside for 3-4 weeks. Transplant them outside in a cold enviroment after this initial growth period. Alternatively you can directly sow them outside in fall.

Lily
Sow seeds in cold frame and allow them to grow until bulbs are formed. Keep seedlings shaded the first year.

Lupine (Texas Blue Bonnet & Arroya)
The best is to plant them in late winter just after the ground has thawed since the cold helps them sprout. If planted in the fall some seeds will sprout in the fall while most will come up in the spring. To get them going in late spring or summer soak them in water overnight, this will make the seeds swell up and start the growth of the seed.   Transplanting is said to be difficult but the sources say that small plants can be easily moved if you keep a lot of soil around the roots. This has not worked well for me, and i use egg boxes to start the seeds, one in each whole, cut the box in 12 pieces once the seedlings show up and plant the whole little pot into the ground. The egg boxes will rotten by the time and keep cutworms away from the young roots.

Maca
You can plant maca during the whole year, but fastest results you'll get when you plant at the begin of spring when it's still cool. Sow surface and just push the seeds by hand a bit into the soil. Keep soil moist and cool. They'll germinate very quickly and you can transplant them to their final location when they are a couple of inch tall. Harvest after appr. 6 months. Maca is very frost tolerant and will survive even in cold climates.

Malay Rose (Etlingera venusta)
Plant the seeds at 1/2" in a well draining soil mixture. Keep warm, damp, in bright light, with hight humidity

Maltese Cross
Start Lychnis chalcedonica seeds indoors 8 weeks before the last frost date, or direct sow outdoors in mid spring.  Barely cover the seeds. Hardy to zone 3.  Easy to grow in full sun.

Marigold - Tagetes
Start marigolds from seeds indoors in spring, six to eight weeks before your region's last frost date. Or, if you don't mind later blooms, start them after the last frost date. Sow the seeds directly in the ground, covering them with about 1/4-inch of soil. Very easy, germinate within a few days.

Mexican Fan palm
Put the seeds in water for just a day. Plant them 1/4 inch deep and cover the pot with a plastic sheet to keep himidity high. Don't forget to water. Withina week they should spourt. This is a great first stater palm seed. and one of the easist palms to germinate.

Mimosa pudica
Cover the seeds with very hot water and let soak overnight or until they swell. Pick out those that didn't swell and repeat this process with them. Sow swollen seeds immediately in seeding mix, covering with two to three times their thickness. Do not over water or allow to dry out and provide good drainage and bright light.  It should germinate within a few days with pretreatment. Do not over water and keep humidity low or fungal problems may occur.

Morning Glory
Morning glory can be direct seeded into the soil after the last frost, but you will have much earlier blooms if you plant indoors 5-6 weeks ahead of time. They are a little tricky to transfer. Use little peat pots that can be put directly into the soil where you want the plant to grow. The seed of the morning glory is very hard. I soak mine overnight before planting to soften the hard shell. Growing morning glories is easy; keeping them where you want them is a little more difficult. You will notice that soon after a bloom fades a perfectly round capsule forms. This is full of tiny black seeds. Once it dries the capsule opens and morning glory seeds drop everywhere. Unless you are so diligent as to cut off EVERY pod they will spread and reseed.

Moso Bamboo & Water Bamboo
Soak seeds for 24 hours in luke warm water. Mix the potting soil with 1/2 of red clay. Sow 1/4 inch deep a nd keep temperature at 70-80 degrees, Germination occurs between 4-8 weeks. The mortality rate of seedlings is high, so plant some more than you will need.

These are the sowing instructions that are recommended, but I planted them myself in normal potting soil in a pot that I kept in the living room, and they germinated after only one week. I didn't even soak them.

Musa & Musella
Sowing Instructions: Sow any time of year after soaking the seeds for 24 hours in luke warm water. Use a peat based seed compost and sow 6mm (¼in) deep. After sowing, seal the seed container inside a polythene bag in order to keep the compost moist. Germination is slow and erratic and can take 1-6 months at 80F.
Growing Instructions: As each seed germinates, transfer it to a 3in pot of good free draining compost taking care not to damage the fragile roots. Pot on as required, the larger the container the larger the plant will grow.
Aftercare Instructions: Grow on in warm well lit conditions. During summer they can be stood outside or planted in the border but should be brought into well lit frost free conditions for the winter until plant is fully established. Keep moderately dry. Some discoloration of the leaf ends may occur through the winter months, but this won't harm the plant. After 2 years winterhardy plants can stay outside.

Nasturtium
Space your seeds 8-12 inches apart in the ground, and a little closer in containers. In zones with freezing temperatures wait until after the frost, and in the mild southern climates they can even be planted in the fall for "winter" blooming. I've found the trick with nasturtiums is to keep them watered during the entire growing season. Especially when they are in containers. They love full sun, but they don't do well in drought-like conditions. As long as you keep them watered and give them room for the air to circulate they are a prolific flower. The soil shouldn't be too rich because you will get more leaves than flowers. The soil can even be slightly sandy and they will thrive. You can use barrel planters, window boxes or porch boxes too. Pick the blooms freely once they start coming, and you will have many more during the summer.

Nerium Oleander
The small seeds should be barely covered. Use a soil mixture to which you should add 15% coarse sand. To germinate the seeds be very careful that you do not keep the soil wet - it should only be lightly moist, Provide bright light.

Night Jessamine
Sow 1/8" deep at 70-80 degrees. Keep moist. Germinates in 2-6 weeks.

Orange Jasmine
Soak seeds in warm water overnight. Then sow 1/4" deep in standard potting mix at 70-80 degrees. Germinate in 3-4 weeks. Keep soil moist.

Orchid tree - Yellow Bells and Pink
Prefers full sun and warmth. Pre-soak the seeds by soaking overnight in hot water. Plant at a depth of 1 1/2 inches using a SOIL MIXTURE to which you may add 15% coarse sand. Keep lightly moist and fertilize lightly with each watering. 

Pampass grass
Sow surface after all danger of frost in well drained soil. It's a good idea to start them in pots. Seeds are very tiny. The plant can be transplanted when 3 inch tall. If you start later than spring, you would need to keep the plant the first winter inside to protect from frost. Easy to grow.

Papaya
Plant the seeds in warm (80° F), sterile potting mix. Seeds should be planted in sterile soil as young papaya seedlings have a high mortality rate from damping off. Potting soil can be sterilized by mixing 50-50 with vermiculite and placing in an oven at 200° F for one hour. Under ideal conditions the seeds may germinate in about two weeks, but may take three to five weeks. Gibberellic acid can be used to speed up germination in some seasons. Seedlings usually begin flowering 9 - 12 months after they germinate

Parlor Palm
Plant the seeds at a depth of 3/4" using well draining soil mixture. Keep warm, damp and in filtered sunlight

Passion flower
sow 1/16 ' deep at 70-80 degrees. Germination takes 2-12 weeks.

Perfume tree (Joy & Chanel No 5, YlangYlang)
Sow seeds 1/8" deep in standard potting mix at 75 - 80 degrees, Keep seeds moist and warm. Sealed plastic bag is best. Germinates in 2-4 months.

Persimmon tree
Sow 1/4 inch deep in a cold frame (39F). Keep them at this temperature for 3 month, then move to 70ºF for germination. Alternatively you can cold stratify the seeds in the fridge for 3 month and sow them in spring.

Petunia
Spread seeds sparingly on top of a container of clean, damp potting soil or milled sphagnum moss. Water with a fine mist to wash them into the potting material or press them in gently with your fingers before watering. Then cover the container with clear plastic and store it in a bright, warm (70 to 85 degrees F) place--out of direct sunlight--until seeds begin to sprout. This usually takes seven to ten days after planting. Remove the plastic film once seedlings emerge. Then relocate the container to a bright, but cooler place; 65 degree days, with night temperatures anywhere from 55 to 65 degrees.
When seedlings have three true leaves, it's time to transplant them into individual peat pots or packs that hold several plants each. Feed them every two weeks (weekly for the "spreaders") with diluted liquid fertilizer. Harden off young plants by putting them outside on sunny, warm days. Then bring them back in at night for several days before planting them outdoors permanently.

Poppy
Choose a site in full sun to light shade. Because poppies have a rather loose growth habit, they do well in wildflower-type plantings.
Pant poppies directly in the soil. Plant in fall in mild-winter areas, or in very early spring - as soon as the snow has melted - in colder regions. Sow seeds directly onto the surface of a prepared flower bed, sprinkling lightly. There's no need to cover the seeds with soil. Once the seedlings are 1/2 to 1 inch tall, thin them so that the remaining plants are 4 to 10 inches apart. Keep soil slightly moist, though annual poppies often tolerate slight drought well. Pull out plants and discard once heat arrives and they become ratty-looking.

Princess Tree
Sow surface and slightly cover with soil. Water regulary, but don't overwater. They can directly be planted outdoors after all danger of frost. It is not recommendable to start them in pots due to strong root development. Will germinate within 3 weeks. Very easy.

Protea
The best time to sow is in fall or spring. Choose the season that gives the seedlings the most time to grow under favourable conditions. For example, if your summer is very hot and dry, but your winter is moderate and wet - sowing in autumn will give the seedlings a whole winter and spring to become strong before the harsh summer. In colder climates, it is best to sow in spring so that plants can become hardy before the frosts of winter.
Plant each seed in a 500 ml plastic seedling bag. Fill the bag with a well-drained acidic soil mixture with a pH of about 5.5. You can make the mixture out of :  2 parts coarse river sand, 2 parts peat or decomposed pine needles, and 1 part vermiculite or perlite. It is important that the soil mixture drains well. Water should run right through the filled tray, but the soil mixture should be such that it retains moisture and remains damp between waterings. The seeds/seedlings should never be allowed to dry out. The vermiculite helps retain moisture. It helps if the soil mixture is sterilised, ridding the soil of fungus, eggs, larvae and pathogens that might harm the seeds or the seedlings. The simplest method is to drench your soil mixture with boiling water before planting the seeds. This is best done on a flat, hard surface and has the added benefit of leveling out the soil. The drainage of the seed tray should ensure that after about 15 minutes, the soil is evenly damp. If there are any soggy patches or water pooled on the top, then your drainage is not sufficient. The boiling water kills germinating weed seeds, insect larvae, snail and slug eggs and fungal spores.

Rosa Rugosa
Cold stratify the seeds at 40°F for 90 to 120 days to prepare the seedcoat for emergence. After stratification seeds can be planted any time of the year. This is an easy-to-grow species, although well-drained soil is key to its success. Slightly acidic soil is preferred, although the plant is adaptable enough for this not to make that much of a difference. It is extremely salt tolerant and can grow well in pure sand. .

Rose Mallow
Barely cover a couple seeds in a 3" pot, or plant outside after all danger of frost. Seeds germinate in 7-12 days at 60-70F/15-21C. After hardening off, transplant to full sun and average soil, planting at least a foot apart; rich soil will mean many leaves and few flowers with this plant. Flowers can be pink, rose, or white, are satiny and often striped and bloom July till fall. Deadhead for more blooms. The neat little Fairy cheese (fruit) will contain 12 seeds for planting next year in a different spot.

Royal poinciana
Place seeds in boiling water. After a couple of minutes add cld water to drop the temperatur to hot but not boiling. Let them soak for 24 hours. Sow seeds in moist seeding mix covering with 3 times their thickness. Place in warm location best on top of refriderator. Germination occurs then in 2-3 days.

Silk tree
Seeds need to be scarified. Place seeds in boiling water and leave to cool 24 hours. Or you can rub seeds with sandpaper or carefully nick, scrpae or chick the seedcoat with a sharp cutting utensil. Sow seeds in well drained potting soil 1/8 ' deep at 70-75 degrees. Germination 2-10 days.

Snapdragon
Snap Dragon are grown from tiny seeds. They take about three weeks or more to germinate. This is the only difficult thing about Snapdragons, and causes many a gardener to get seedlings at their nearest garden store. But if you are up to the challenge, try germinating them yourself indoors about 6-8 weeks before the last frost in your area. Snap Dragon grows best in full sun. They will grow well in average soil. Add a general purpose fertilizer before planting if the soil is poor.
Plant Snap Dragons outdoors after the last frost for your area. Fertilize once a month. Flowers will bloom in June. After the flowers have died off, cut the plant back to about six inches. Then add fertilizer. This will promote new growth and a second bloom. Snap Dragons are very hardy. They can withstand a heavy frost. So if your plant is still blooming in the fall, do not be too quick to clean up the flower garden.

Stevia
Stevia can be grown either in pots on your balcony or any sunny spot, or else in a hydroponic unit.  Stevia plants also do quite well in "container gardens."  A 10" to 12" diameter container filled with a lightweight growing mix is an ideal size for each plant.  A little mulch on the top will help retain the moisture in the shallow root zone.  A properly fertilized hydroponic unit or container garden can provide you with as much stevia as an outdoor garden, if not more. Sow surface and push the seeds slightly onto the soil. Because tender young stevia plants are especially sensitive to low temperatures, it's important that you wait until the danger of frost is past and soil temperatures are well into the 50s and 60s before transplanting them into your garden. Once you begin, it's best to plant your stevia in rows 20 to 24 inches apart, leaving about 18 inches between plants.  Your plants should grow to a height of about 30 inches and a width of 18 to 24 inches. Harvesting should be done as late as possible, since cool autumn temperatures and shorter days tend to intensify the sweetness of the plants as they evolve into a reproductive state.  While exposure to frost is still to be avoided, covering the plants during an early frost can give you the benefit of another few weeks' growth and more sweetness.

Strelitzia Nicolai & reginae
From seed, plants given ideal conditions will flower within 3 years. To get a mature flowering plant from seed takes about three to five years. For best results sow fresh seed in spring. Before sowing, remove the bright orange tuft of hairs attached to the seed (aril of each seed) and soak in a aqueous solution of ethrel at a concentration of 2000 ppm active constituent, for 48 hours. In practical terms this entails making up 6ml ethrel (39.5% active ingredient) to a litre of water. Sow in seedtrays filled with a well-drained soil medium at a depth of 1,5 times the size of the seed. A constant temperature of 25 C is most suitable for germination as low temperatures retard germination. Germination takes four to eight weeks. Seedlings should be a good size before transplanted (two to three leaves) into a well drained medium. Young strelitzia plants must be grown in shade, for the leaves tend to burn in direct sunlight. Regular repotting allows the young plant to develop rapidly. Restricting the root development retards growth.

Sunflower
Plant in full sun, where they will not shade other plants. Be sure to plant after the last frost in your area. The seeds should be 1 inch deep and 6 inches apart when planted. When the seedlings pop up, thin them to 1 1/2 foot apart. Water well after planting

Sweet William
Dianthus should be planted where they will receive at least 4-5 hours of full sun each day. They thrive in fertile, fast draining, slightly alkaline (pH 6.75) soil. Avoid over-watering because it may tend to turn the foliage yellow. Usually a weekly watering of established plants will suffice unless the weather is extremely dry. Dianthus will often reseed themselves, so don't be too hasty in removing spent plants from the ground. Perennial varieties may be propagated by tip cuttings, layering or division. Spent flowers should be removed promptly to promote continued blooming.Plant Dianthus species 12 to 18 inches apart and at the same depth at which they were previously growing. The crown, or top of the root structure, must be level with the surface of the soil. (Never bury any part of the stems.) Unlike most other plants, Dianthus plants should not be mulched. They require good air circulation around the stems at all times and must be kept as free from foliage moisture as possible. For continued blooming feed lightly every 6 to 8 weeks with an all-purpose (10-10-10) liquid fertilizer.

Tatarian honeysuckle
Soak seed in room temperature for 24 hours. Place soaked seeds in a small plastic bag or container filled with slightly moist sterilized peat moss or vermiculite that has been sprayed with a fungicide product. Place bag or container in the refrigerator for 2-3 months. Check seeds periodically as germination may occur while in the fridge. If this occurs, immediately move on to sow them 1/8 inch deep in good soil and place container in a room about 70 degrees. Keep soil mixture moist. After germination, grow seedlings in bright light, preferably under grow lights. Keep seedlings only 3-4 weeks inside unless you have a cool environment with bright light. Transplant to larger container outside or in a cold frame after this initial growth period.

Trumpet creeper
Cold stratify for 6-8 weeks. After this process sow 1/16 - 1/8" deep in quality sterilized soil and place at 70 degrees. Keep soilmixture moist. After germination grow seedlings in bright light under grow lights. Transplant to larger container after 4 weeks..

Water Bamboo
Plant at 1/2 inch depth using well drained soil mixture, keep only lightly moist and in bright light. Fertilize weekly. Will germinate in 6-8 weeks and can be sown any time of the year.

White and Red Japanese rose
Soak seeds in warm water for 24 hours. Cold stratify for 3-4 months. After this process sow 1/8 ' deep in quality sterilized soil or soilless mixture and place in room temperature. Keep soil moist. After germination grow seedlings in bright light (grow light) Continue to grow inside for 6-8 weeks then transplant outside.

Yellow Bells
Sow 1/16'deep at 70 degrees. Germination 2-3 weeks, Hardy zone 9.

Yucca
Sow spring in a greenhouse. Pre-soaking the seed for 24 hours in warm water may reduce the germination time. It usually germinates within 1 - 12 months if kept at a temperature of 80°F. Prick out the seedlings into individual pots when they are large enough to handle and grow them on in the greenhouse or cold frame for at least their first two winters. Plant them out into their permanent positions in early summer and consider giving them some winter protection for at least their first winter outdoors.. 

Zinnia Giant
The good seeding season is the mid to end spring. It is recommended to plant them directly in container, because their germination rate is pretty high, and the size of the seeds is large enough to be treated easily.
It is recommended to keep 3 inches of interval to seed them, because they grow big.
Full sun is preferredThey seems to be always thirsty. Especially in the dry summer in California, sometimes they require watering more than once a day. However, in the humid summer in Japan, maybe it is enough if you water them once a day only on sunny days.
If you forget watering, they lose vigor easily.