I have gotten Siberian C seeds from Margie Luffman at Harrow several
times. The first time I stratified before planting (98% grew the first
season) but after my zone 3 Winter, about 20% survived into the following
season.
The second time I received seeds, I planted immediately so the seeds
would be subjected to frozen ground temperatures. About 20% grew and, 100%
of those, 20% survived into their second season.
I also got some Bailey seed (once) and of those that grew, zero percent
survived after their first season here.
The winter low temperatures for all of the above tests measured in the
thirties (Fahrenheit) below zero. Of my surviving Sib C's, they only bear
fruit following a Winter in which the low temperature did not drop below -25
F.
Jim Fruth
Brambleberry Farm
Pequot Lakes, MN 56472
For jams, jellies, syrups and more:
www.jellygal.com
1-877-265-6856 (Toll Free)
1-218-831-7018 (My Cell)
[NAFEX] Siberian C mortality,
Jim Fruth, 05/06/2009