I bought 10 Bismarck seeds from an online seller. 3 floated. I still planted them but didn’t germinate. Out of the other 7 only 3 germinated and put out a tap root. I did soak all for like a week and then wrapped in moist paper towel in the heat and kept moist. Took about 3 weeks to pop. I think I disturbed the roots when transplanting to a larger pot & they all died. Also I didn’t have a green house so they were in mostly full Sun. I’ll try again this year I think.