Re: germinating koreana?
>I've heard that some irises (such as cristata) require 2 winters to
>germinate. I would venture to say that if your koreana seeds do not
>germinate this spring, they're probably not ever going to. (This would be
>their 3rd winter.)
>
I. cristata - most floriferous seedling SIGNA 02, sown last March is
now starting to germinate. It did not get any special treatment,
just outside in the unheated greenhouse. I will treat the
odaesanensis seed the same.
I dumped out and examined all the SIGNA 01 seed that hasn't
germinated yet, and found that in some seedlots, all seeds had rotted
(not from excessive wet) including koreana ex plants col in Korea,
chrysographes col in Yunnan, Pacific Dark Eyes, and cycloglossa. The
squishable seedcases were still there, so it was not that something
had eaten the seeds.
I japonica var pallescens col in Sichuan - 5 of the 9 seeds received
were rotten. There's still hope for the 4 remaining ones.
Of the seedlots that have ungerminated seed, I nipped half the seeds
lightly with nail clippers (the treatment I give to all legume family
seed, like Lupinus) and sowed clipped/unclipped lots separately.
--
Diane Whitehead Victoria, British Columbia, Canada
maritime zone 8
cool mediterranean climate (dry summer, rainy winter - 68 cm annually)
sandy soil
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