I haven't received the seeds yet, but they appear to be hard in the photos online. I tried so many young seedlings from that nursery and they all died within months (if not weeks). I'll sow the seed directly in the prairie and see if that improves my results. I was tempted to get the prairie turnip variety of Psoralea, but I decided to just stay with P. onobrychis, which has showier flowers. I love the purple-blue color! Dennis in Cincinnati On Tue, Oct 18, 2011 at 8:44 PM, AW <awilson@avonia.com> wrote: > I have raised Psoralea pinnata from seed. No special requirement needed > except to nick the seet coat at time of sowing. Maybe Ps. onobrychis is > similar in that respect, but I have not tried that species. Is the seed > hard? >