Testing black locust seeds out a few weeks before I head up to try planting some more, starting with scarification. On my first trip I soaked the seeds in warm tap water for a little less than a day. I've heard that they do best when simulating a fire, and space is cleared for the new shoots to take a hold and grow. So the first picture shows the effect of tap water, nearly boiling water, and fully boiling water poured into ceramic cups, and 10 seeds added to each:
60% germination/swelling from tap water, compared to 80-90% for very hot to boiling water. I took all the seeds which didn't swell and the control seeds and put them back in just-boiling water and they all swelled the second time around. I left them in the water for an extra 2 days by mistake, and each one was also sprouting when I took them out.
I then put all the seeds in little pots in a sunny spot, and watered twice a day... most days... but at least once a day, and we've had consistent rain as well. many seeds started sprouting, but I've noticed that they lose their first pair of leaves fairly often:
I put about 6 seeds in each pot, and probably had 5 sprouts in each initially, but now I have maybe 10 total between 5 pots. So 35 seeds that were relatively babied is down to 35% success and they are all at 1 inch tall. Boiling water seems like the best bet to get them started, and I'll try the little peat pots next that you can place right in the soil, and I'll bring some pieces of fencing to put around as many as I can. Will also get a couple bags of mulch and will see this fall if it was any help. If not, I won't bother repeating the process until I'm up there every day to baby the plants along their first year or two.