Most of my erythroniums are in patches and set lots of seeds. I keep each species separate, and there are a couple of species of which I have only one, so they are not near any other. They have not set seed. To be sure they are self-sterile, I should have self-pollinated them, and I never have, so it might just be that the pollinators don't bother to fly to one lonely flower. Diane Whitehead Victoria, British Columbia, Canada maritime zone 8, cool Mediterranean climate mild rainy winters, mild dry summers On 12-Apr-10, at 10:11 AM, Roy Herold wrote: > are erythroniums self compatible, or does it take two to get seed? >