Re: HYB: help - chilled seeds, germination
Thanks for the thoughts folks.
Outdoor temperatures for the next couple of months won't likely be in
the range of reported temperatures for optimal germination of TBs (i.e.,
50 to 60oF) for more than a few days here and there, so I wouldn't
expect to see any germination outdoors till the "usual" time. [ignoring
that we sometimes get a week in the middle of winter with highs in the 70s!]
However, the sunporch seems to have a really good temperature range for
germination . Nights never below freezing, but often in the low 40s
(i.e., temperature needed for chilling), days rarely above 60 this time
of year. And if we do have any exceptionally warm sunny days that push
temps above the mid-60s, I open the door between the sunporch and the
house, where I've been mostly keeping the heat pump set at 64oF this
winter, using the wood heater for supplemental heat.
In years past, after partial germination, I've put pots back outdoors
for more chilling (and to free space on the sun porch), then brought
them back in later in the winter to get a head start on outdoor germination.
These are <all> important crosses - fertile survivors of the great
spring wipeout of 2007! ;-)
But not important enough to go the route of embryo culture...
Thanks again for the thoughts. Am inclining towards potting and putting
outdoors for a bit of heavy watering and temp cycling while I make space
on the sunporch for them.
Not quite in the mood for splitting seed batches for different
treatments, but will think about it. Seems like there were two pods of
one cross, so a lot of seeds in that one. They will probably have to go
into multiple germination pots anyway, so might try more experimenting
with that one.
Linda Mann east Tennessee USA zone 7/8
East Tennessee Iris Society <http://www.DiscoverET.org/etis>
Region 7, Kentucky-Tennessee <http://www.aisregion7.org>
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