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Dec 21, 2018 11:37 AM CST
Thread OP
Name: Stefan
SE europe(balkans) (Zone 6b)
Wild Plant Hunter Plumerias Overwinters Tender Plants Indoors Cactus and Succulents Sempervivums Bromeliad
Adeniums Bookworm Sedums Tropicals Fruit Growers Foliage Fan
I dont really grow a lot of alpines(cactus and succulents mainly) , and i know even less about growing them from seeds...
How do i germinate saxfiraga cotyledon or paniculata?
Can they withstand strong sun, heat and drought....
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Dec 21, 2018 2:34 PM CST
Name: Rick R.
Minneapolis,MN, USA z4b,Dfb/a
Garden Photography The WITWIT Badge Seed Starter Wild Plant Hunter Region: Minnesota Hybridizer
Garden Sages I was one of the first 300 contributors to the plant database! Plant Identifier Million Pollinator Garden Challenge
Seeds of Saxifraga species are all warm geriminators and do not require a pretreatment. Most want light to germinate. I would have a 1-3mm layer of grit over your gritty soil mix in a pot, sprinkle the tiny seed over the grit layer, and water the seed in so it washes into the grit. Enclose in a clear plastic bag, and place in good light but not direct sun, 15-20°C. Germination will be fastest at 20C. Open the bag (but do not remove it) when growth is evident. Subsequent growth will be better at 10-15C. Keep moist, but open the bag a little more every few days over 1-1.5 weeks until you remove the bag completely. Still bright light but no direct sun.

Alternatively, you could press the seed into the surface of your gritty soil mix, and water, etc. The disadvantage here is that often moss or algae will compete with the seedlings, and become difficult.
When the debate is lost, slander becomes the tool of the losers. - Socrates
Last edited by Leftwood Dec 21, 2018 2:53 PM Icon for preview
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