Johannes, I planted them in the late summer, early fall, time enough for them to get settled before winter. I have the seed in an envelope, in a plastic bag, in the refrigerator. That is how I have stored all of my seed. Thanks for your interest in helping to solve my mystery. Anita R. On Tue, Mar 28, 2017 at 4:34 PM, Johannes-Ulrich Urban < johannes-ulrich-urban@t-online.de> wrote: > Hello Anita, hello All, > > My potted Arisaema are moved into my cellar in their pots in autumn. The > compost dries out slowly during winter but protects the dormant tubers from > dessication. > In spring I repot, I only do so in autumn if there is a reason. This way > there have been little losses. > For sowing Arisaema seed right now is a perfect time. They do not need > stratification and would have a full growing period before winter being > summer growing. On the other hand Arisaema seed is long lived if properly > stored. > Another question: When did you plant your disappearing Arisaema, autumn or > spring? > > Thank you all for your helpful reply concerning my large form of > Frittillaria imperialis. I think it is most likely a sterile Triploid, I > had not thought of that. I would say there is no embryo in the seed. I > don't do anything to make it set seed, no hand pollination, the seed is > just there. Every capsule gets very big, I always remove some to avoid > stress for the plant. > > Bye for today > > Uli > > > Von meinem iPad gesen > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://pacificbulbsociety.org/list.php > http://pacificbulbsociety.org/pbswiki/ >