Mort Posted November 8, 2006 Report Share Posted November 8, 2006 Hi, I want to ask what temperature to germinate need this species: Drosera bulbosa Drosera lowriei Drosera erythrorhiza ssp. erythrorhiza Drosera macrantha ssp. eremae Drosera peltata 'Northlands, NZ' Drosera peltata 'white flower, near Camberra' Drosera auriculata BG Munic clone Drosera peltata Drosera menziessi ssp. menziessi Drosera macrantha ssp. planchonii Drosera porrecta 'northern form' Drosera menziessi ssp. basifolia Drosera erythrorhiza ssp. magna Drosera erythrorhiza ssp. collina Drosera macrophylla ssp. macrophylla Drosera ramellosa Drosera stolonifera ssp. stolonifera Drosera gigantea Drosera stolonifera Drosera glanduligera Drosera hartmeyerorum Drosera arcturi Quote Link to comment Share on other sites More sharing options...
glider14 Posted November 9, 2006 Report Share Posted November 9, 2006 i have peltata seeds right now that have yet to sprout. some of those need a hot dry stratification and some may also need scarification. as a general rule...tuberous Drosera need it to be cool to germinate... 50-60*F or 10-15C. For the Gladuligera i got this from the ICPS. The seeds of Drosera glanduligera have similar germination requirement as tuberous Drosera. Kamil Pásek of Best Carnivorous Plants reports that keeping the seed pots at 8-12°C is sufficient to get reasonable germination rates. This may be difficult to do. Another method is to plant the seeds outside in the middle of the summer. That means damp soil and air temperatures peaking above 30°C (85°F). Soil temperatures may be higher. Use a soil similar to what you would use for tuberous Drosera--usually more sand than peat. This period of warm stratification should be followed by cool days of less than 22°C (70°F) and nights around 10°C (50°F). This usually corresponds to typical fall weather in temperate and Mediterranean climates. Scarification will help the seeds to germinate quicker. But that can be good or bad depending on when they germinate. If your weather gets cool then hot again in the fall, any young plants will need to be protected from warm temperatures. If you are trying to germinate the seeds during the winter under lights in a basement, scarification should help.Keeping the plants alive can be a problem unless you can keep them below 22°C (70°F). The plants shown above were grown in the shade. The ones grown in the sun, even if the air temperature was below 22°C, did not survive very long. D. hartmeyerorum needs it to be hot and bright! at the least 30C. D. arcturi....i have no clue. this is from the best carnivorous plants website. The fresh seed of D. arcturi stratificated at a temperature range of -5-12°C germinates within 3 months. Germination of sown seed was approximately 5% after 5 months. Good luck!! Alex Quote Link to comment Share on other sites More sharing options...
JanW Posted November 9, 2006 Report Share Posted November 9, 2006 At first you will need a good source! Most sold seeds are OLD. Many of those species rarely set seed... You will need GA3 and much luck to germinate them. Quote Link to comment Share on other sites More sharing options...
Dieter Posted November 9, 2006 Report Share Posted November 9, 2006 Well, at least your D. peltata and D. auriculata seed is certainly fresh and in will germinate without any pretreatment at or around room temperature within 2-4 weeks. D. menziesii ssp. basifolia (my own seeds) germinate for me also without pretreatment, but the germination rate is not really satisfying yet. I hope this will change soon. Cheers Dieter Quote Link to comment Share on other sites More sharing options...
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