We've been germinating this seed for years (usually fresh) and the key factor is scarification. No cold treatment required. Paul -- Paul Licht, Director University of California Botanical Garden 200 Centennial Drive Berkeley, CA 94720 (510)-643-8999http://botanicalgarden.berkeley.edu On Sun, Mar 23, 2014 at 10:01 AM, penstemon <penstemon@q.com> wrote: > > Do these seeds have to go through several hard freeze cycles, or will a > week at > 0* to 2*C suffice? > > > There is a thesis online, on this very subject. > http://www.ecotree.net/thesis.pdf > It comes from this website: http://www.ecotree.net/spiral_aloes.shtml > > > Bob Nold > Denver, Colorado, USA > snowdrops almost done > > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://pacificbulbsociety.org/list.php > http://pacificbulbsociety.org/pbswiki/ >