Hi, In Seattle, Erythronium revolutum roseum grows successfully for me sometimes in a partially shaded bed, the soil having been amended with organic material, and some summer water. Seedlings come up on their own , but , oddly in cracks in the sidewalk next to the bed. I'm not entirely sure why,but they seem to prefer, and easily find this spot more often than the bed itself. Perhaps they prefer the leaner soil, the cover of concrete stepping stones for a very cool root run, or something else? The soil beneath the stepping stones is clay loam, not organically amended soil. The seed would get ample winter chill, some freezing, but at least 8-12 weeks of 30's-40's temps. I know fresh seed is important, as I've raised seedlings in a seed pan before, and germination occured after the first cycle of stratification. Rick K On Thu, Mar 28, 2013 at 6:22 AM, Diana Chapman <rarebulbs@suddenlink.net>wrote: > Richard: > > I have found that seed that is more than a year old is very difficult to > germinate. I germinate all my seed in the refrigerator, putting it in > vermiculite in plastic bags and leaving it there until I see signs of > germination, usually about three months. > > > > > > > _______________________________________________ > pbs mailing list > pbs@lists.ibiblio.org > http://pacificbulbsociety.org/list.php > http://pacificbulbsociety.org/pbswiki/ >