Sowing tips
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Sowing tips by type of seed
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Bananas in general
(Musa, Ensete and Musella) soak the seeds in lukewarm water for 48 hours (a thermos flask is ideal to keep the water at the right temperature), change the water every 12 hours (using Kirstenbosch seedprimer or GA3 when soaking can promote germination and also pouring boiling water beforehand is said to help the seeds germinate). Sow the seeds so deep that just a little of the seed is visible (it is assumed that light plays a role in germination), place in a warm (25-30 C.) and very light place, keep the soil moist ! Check regularly after two weeks whether seeds are already sprouting, pot the seedlings in a good potting soil with approx. 20% perlite mixed in, carefully let them get used to the sun! The seedlings will grow quickly in a warm and light place, larger plants need a lot of nutrition and a lot of water in warm weather. Wait until the plant has formed suckers (this indicates a well-developed root system) before planting winter-hardy varieties in the open ground. If necessary, wait until the second growing season.
Strelitzia's (Reginae, Nicolai, Alba, Juncea, Caudata and Mandela's Gold) and Ravenala's (Madagascariensis and Guayanensis) remove the seed coat (the brightly colored "panicle"), do not nick the seeds as is often said, this leads to rot! Then as with bananas in general.
Heliconias (various species)
Lightly sand the seeds, soak for four days in lukewarm water, change the water every 12 hours, sow on the surface of an airy soil mixture (do not completely cover the seeds, as with all banana species, light plays a role in germination), the press the mixture lightly, provide plenty of (bottom) heat and light.
Beware: Bananas sometimes take a long time to germinate, three months is no exception, it even happens that germination only takes place after 3 years, so be patient and don't throw the seed away too quickly!
Palms in general
Trachycarpus and Chamaerops
If the Trachycarpus seeds look very fresh, skip soaking, try to remove (peel) the "skin", the germination temperature is between 18-22 C., at higher or lower temperatures the seed will not germinate! Further as with "palms in general".
Butia capitata, B. paraguayensis and Jubaea chilensis
Have a long germination time (at least a few months) which can possibly be shortened by cracking or grinding the seed, or the like, because the (several) real seeds are located inside, but this must be done very carefully because these seeds must not be damaged , further as "palms in general".
Butia eriospatha
Keep the seeds dry in the refrigerator for a few weeks, then as with B. capitata and paraguayensis (the germination is faster than the other Butias).
All other palms: see palms in general.
If the seeds have been delivered with pulp, this must first be removed as much as possible!
Actinidia melandra
Sow in moist seed compost with some extra sand, barely cover the seeds with the same mixture, place in a warm and light place.
Adansonia digitata
African Iris
See Diets vegeta.
Agapanthus africanus
Follow the same procedure as for "Succulents and Xerophytes".
Amorphophallus (Paeoniifolius, Kaichinensis, Longituberosus, Macrorhizus, Yunnanensis and Kiusianus)
Sow in an airy mixture with a lot of organic material (compost), do not allow the seeds to dry out, cover with a transparent plastic bag and store warm and light. Let the "tuber" overwinter frost-free and dry.
applebox
See Eucalyptus Bridgesiana.
Asimina Triloba
Germination requires a cold period of 60-100 days, sow outdoors in winter in a pot with moist soil or store in a bag with moist soil in the refrigerator, then warmer, germination time 4-8 weeks.
Bamboo
See Phyllostachys.
Baobab
See Adansonia Digitata.
Belamcanda chinensis
The seeds need a cold period to germinate, sow outdoors at the end of winter in sowing soil, cover the seeds with a thin layer of soil, press lightly, keep moist but not wet. It is also possible to mix the seeds with a little bit of moist seed compost and store it in the refrigerator for 6 weeks, then spread it over a pot with seed compost and place it in a light, warm place.
Blackberry Lily
See Belamcanda chinensis.
Brazilian Cabbage Tree
See Cordyline dracaenoides.
Brugmansia
Sow a seed thickness deep in an airy soil mixture, warm, lots of light, high humidity, keep moist but not wet!
Candy Lily
See Belamcanda chinensis.
Caragana arborescens
Needs a cold period to germinate, so sow outdoors at the end of winter in a pot (first soak the seeds in warm water for 24 hours), otherwise a cold treatment is of course also possible in the refrigerator.
Cedrus libani
Sow in clayey soil with some extra sand, keep moist but not wet!
Coffea arabica
Sow a seed thickness deep in well-drained, slightly moist (not wet!) potting compost, place in a warm and light place. Coffee takes a long time to germinate!
Cordyline australis and terminalis
Follow the same procedure as for "Succulents and Xerophytes".
Cordyline banksii, dracaenoides and indivisa
Mix the seeds with a very small amount (two or three times the volume of the seed) of moist seed compost and store it in a plastic bag in the refrigerator for at least 6 weeks, then spread this mixture on top of a pot with seed compost, further as for "Succulent plants and Xerophytes".
Costus (various species)
Sow a seed thickness deep, keep moist and warm, lots of light.
Cycas (Cycas, Dioon, Encephalartos, Macrozamia, Zamia etc.)
Soak the seeds in lukewarm water for 48 hours (a thermos flask is ideal to keep the water at the right temperature), changing the water every 12 hours. Fill Tupperware trays halfway with Cocopeat, perlite or a mixture of these, press the seeds halfway along the longitudinal axis into the medium, place the trays warm (25-30 C.), after germination a taproot begins to move downwards grow, when it is about an inch tall pot in (preferably) 7x7x18 cm palm pots. in good potting soil with approx. 20 percent perlite mixed in.
Datura
Sow on the surface of a mixture of seed soil with extra sand, barely cover the seeds with this mixture, keep slightly moist. When the seeds come up slowly accustom to more and more light.
Dietes Vegeta
Sow the seeds one seed thickness deep in an airy mixture, keep warm and slightly moist, germination can take quite a long time.
Diopyros khaki
Sow in a mixture of soil and sand, keep medium moist, not wet!, put away in a warm light spot. Kaki takes a long time to germinate.
Doryanthes palmeri and excelsa
See Succulents and Xerophytes.
Dracaena draco
See palms in general, however, the plants need a shallower pot.
Eriobotrya japonica and E. deflexa
Sow in an airy and moist soil mixture (not wet!), put away in a warm and light place.
Etlingera elatior and venusta
Soak the seeds in lukewarm water for half a day, sow in an airy mixture (e.g. sowing soil with some extra sand), put away in a very light and warm place with high humidity.
Eucalyptus crenulata
Mix the seed with a small amount (two or three times the volume of the seed) of seed compost or Cocopeat, moisten this mixture and store it in a plastic bag in the refrigerator for 4 weeks, then distribute over the surface of a jar with moist seed compost and put this away in a light place (20-25 C.), keep moist!
Eucalyptus bridgesiana and neglecta
Sow on the surface of a seed pot, barely covering the seeds with a very thin layer of sand, keep moist, not wet!
Pomegranate
See Punica granatum.
Ginkgo biloba
Sow about one seed thickness deep in moist seed compost with some extra sand mixed in, lots of light!
Hedychium (various species)
Soak the seeds in hot water for 2 hours (in this case, the soaking has two functions: it softens the hard outside of the seed and removes any chemical substances that may be present that could hinder germination, in nature this happens in the gastrointestinal tract of animals that eat the seeds), then Sow on top of an airy soil mixture, make sure the seeds are not completely covered (as with banana-like seeds, for example, light appears to play a role in germination), keep warm (about 25 C.) and moist (not soaking wet), plenty of light, germination can take quite a long time (2-6 weeks).
Jelecote Den
See Pinus patula.
Khaki
See Diospyros Kaki.
Coffee
See "Coffea arabica".
Loquat
See Eriobotrya japonica and E. deflexa.
Lebanese Cedar
See Cedrus libani.
Leopard Flower
See Belamcanda chinensis.
Malay Rose
See Etlingera venusta.
Malaysian Rose
See Etlingera venusta.
Moso Chiku
See Phyllostachys pubescens.
Nerium oleander
Sow on the surface of a mixture of seed soil with extra sand, barely cover the seeds with this mixture, keep slightly moist. When the seeds come up slowly accustom to more and more light.
New Zealand Flax
See Phormium tenax.
Olea Europea
Carefully file or cut a tip off the seeds (so moisture can enter), sow about one seed thickness deep in airy sowing soil, keep moist, not wet! Set aside in a warm place with plenty of light.
Olive
See Olea europea.
Omeo Gum
See Eucalyptus neglecta.
ParasolDen
See Pinus pinea.
Passiflora (various species)
Sow one seed deep in moist, well-drained sowing soil, plenty of light and heat, likes high humidity.
Paw Paw
See Asimina triloba.
Phormium tenax
Mix the seeds through a little damp soil and keep this mixture in the refrigerator for 8 weeks, then spread out on a pot of soil with some sand mixed in, put away in a light place, keep moist. New Zealand Flax takes quite a long time to germinate.
Phyllostachys pubescens and P. heteroclada
Soak the seeds in water for a day, sow (preferably) in moist perlite, cover the seeds with a thin layer of perlite, keep moist, not wet!, put away warm and light. If you cannot get your hands on perlite, it can possibly be replaced with seedling soil with some sand mixed in. Overwinter the young plants indoors in a cool place for the first winter.
Pink Torch Ginger
See Etlingera eliatior.
Pinus pinea and P. patula
Sow one seed thickness deep in airy, well-drained sowing soil, set aside warm and light, do not water the soil again until it feels dry.
Poncirus trifoliata
Sow in a pot with slightly moist sowing soil in a bright spot.
Protea (various species)
The included half seed primer in a 25 ml container. water, soak the seeds in this solution for a day, then sow a seed thickness deep in a mixture of sand and compost. Put away in a light and warm place. Keep moist, not wet!
Punica granatum
Sow the seeds about one seed thickness deep in sowing soil with some extra sand, put away in a warm and light place, do not water again until the soil begins to dry up.
Red Torch Ginger
See Etlingera eliator.
Red Kiwi
See Actinidia melandra.
Russian Olive
See Elaeagnus angustifolia.
Siberian Pea Bush
See Caragana Arborescens.
Succulents and Xerophytes (Agave's, Cacti, Yucca's, Beaucarnea's, Dasylirions, Doryanthes, Ocotillo, Puya's, Xanthorrhoea's etc.)
fill a seed tray with slightly moist sowing soil with some extra sand mixed in there, sow on the surface, barely cover the seeds with the same mixture, put away warm and light, do not spray again until the soil starts to dry up. (Beaucarneas, Nolinas and Dasylirions sow without the three-winged capsule -the membrane that sometimes still surrounds the seeds). Hardy species that you plan to plant outdoors are best overwintered indoors the first time.
Tetrapanax Papyrifera
Sow in moist seed soil, not in bright light!
Victorian Silver Gum
See Eucalyptus Crenulata.
Water Bamboo
See Phyllostachys
Hardy Citrus
See Poncirus Trifoliata.