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Re: Seed Exchange
Hi Diane,
It'd be
great to get a discussion of germination going.
I haven't
succeeded with gracillipes either, although I think I only tried it
once. Presumably it's double dormant like cristata--have you kept
the pot through two winters?
I have
tried koreana and all the other chinenses seeds I can get my hands on,
and have not gotten any to germinate. I'm pretty sure at this point
that the default method of stratifying over winter and waiting for
germination in spring does not work. I have had pots of stratifying
seed for at least two years with no luck. My current thinking is
that maybe these are cool germinators, like the PCN's are. I've got
an unused bedroom which gets down to 40-50 F in mid-winter, and will try
some seeds in there. Here in upstate NY (Zone 5) we go from winter
to summer too fast for an extended period at those temps outside.
Versicolors I have always found to be dead easy; I just sow the seed in
soilless mix, leave them outside over winter, and they germinate when the
weather warms up in spring. Maybe you just got a bum seed lot, or
maybe it's not cold enough there. You could try refrigerating the
seeds to stratify.
I have not
tried wattii, but I tried some of the japonica that was in the exchange a
couple of years ago, Darrel Probst's donation. I tried the
directions he gave in the seed germination issue of the SIGNA bulletin
(#53, fall '94). No luck. I have a couple of cristatas
obtained as plants, and will try to germinate any seeds I get from
them.
A couple
of things I have had some luck with, which are supposed to be difficult,
are sintenissii and graminea. Someone on this list once mentioned
that he had graminea germinating in the pot the mother plant was grown
in. This suggested to me that the seeds were being sown as soon as
they ripened, and spurias in general are supposed to benefit from using
fresh seed. I have also gotten a small percentage of germination
from dry seed; in both cases, the seeds germinated for me in the fall
after stratification.
Ken
Walkup
At 12:48 PM 12/27/2006, you wrote:
I have marked something on each
page, but now come the second thoughts. I have 33 lots of SIGNA
seed from 2001 to 2005, that haven't germinated yet. Most of them
are from 2004. Some species have germinated from some
seedlots.
But what about the ones that have never germinated for me? Do I try
them again or give up? Here's the list.
gracilipes, koreana, versicolor, wattii
Diane Whitehead
Victoria, British Columbia, Canada
maritime zone 8, cool Mediterranean climate
mild rainy winters, mild dry summers
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