chiming in here re: Erythronium... I've had excellent germination with *Erythronium revolutum* + *Erythronium oregonum* by collecting seed after pods open (typically mid-June at sea level Vancouver, BC); I keep inside for the rest of summer; within paper seed envelopes, inside an airtight glass container, packed with dry short grain rice, located a cool but non-air conditioned basement (avg. 21c). I sew into damp by v. well drained medium within an airy-greenhouse typically in late september or early october, and with this method seem to have very good success. this method generally follows the macro-phenomena of their seasonal cycle, ie. keeping them close to evolved temperature conditions in their habitats, but keeping them guarded from being eaten up or rotted away. the lack of diurnal fluctuation within the basement doesn't seem to have any negative effects on germination... hope that helps 🐇 chad c. manley Fellow & Lecturer, School of Landscape Architecture University of Tennessee P. 604.562.4422 *chadmanley.ca* *@chadmanley.practice* <https://www.instagram.com/chadmanley.practice> On Fri, Feb 24, 2023 at 8:00 PM Marc Rosenblum via pbs < pbs@lists.pacificbulbsociety.net> wrote: > On 2/24/2023 4:57 PM, Jane McGary via pbs wrote: > > That's really interesting, Diane. I wonder if that is why my > > Alstroemeria seeds germinate best after being kept at room temperature > > until fall sowing? > > > > Jane McGary > > > > On 2/24/2023 1:00 PM, Diane via pbs wrote: > >> Erythronium, along with other spring blooming flowers, sheds seeds > >> with undeveloped embryos. They need months of warm weather for the > >> embryos to develop within the seeds. Putting them in the fridge will > >> halt that development. > >> > >> Diane > >> > >> > >> Jan Jeddeloh via pbs <pbs@lists.pacificbulbsociety.net> wrote: > >>> Off hand the only old bulb seed I’d be leery of offering is > >>> eryththronium. In my experience they don’t seem to like storage but > >>> maybe I’m not storing them correctly. If anyone has further > >>> information on the subject of erythronium seed storage I’d like to > >>> hear it. > >>> > >> _______________________________________________ > >> pbs mailing list > >> pbs@lists.pacificbulbsociety.net > >> http://lists.pacificbulbsociety.net/cgi-bin/… > >> Unsubscribe: <mailto:pbs-unsubscribe@lists.pacificbulbsociety.net> > >> PBS Forum > >> latest: > https://pacificbulbsociety.org/pbsforum/index.php/… > > _______________________________________________ > > pbs mailing list > > pbs@lists.pacificbulbsociety.net > > http://lists.pacificbulbsociety.net/cgi-bin/… > > Unsubscribe: <mailto:pbs-unsubscribe@lists.pacificbulbsociety.net> > > PBS Forum > > latest: > https://pacificbulbsociety.org/pbsforum/index.php/… > > Jane, > > I find that Alstroemeria germinates well with 6 weeks at 70 F (20 C) > dark, and then transfer the ones not sprouted to the refrigerator at 40 > F (4 C) till they sprout. > > Marc > > _______________________________________________ > pbs mailing list > pbs@lists.pacificbulbsociety.net > http://lists.pacificbulbsociety.net/cgi-bin/… > Unsubscribe: <mailto:pbs-unsubscribe@lists.pacificbulbsociety.net> > PBS Forum latest: > https://pacificbulbsociety.org/pbsforum/index.php/… > _______________________________________________ pbs mailing list pbs@lists.pacificbulbsociety.net http://lists.pacificbulbsociety.net/cgi-bin/… Unsubscribe: <mailto:pbs-unsubscribe@lists.pacificbulbsociety.net> PBS Forum https://…