Okay, I did a forum search to see if this has come up before. It hasn't. I have a LOT of seeds from my favorite old linden tree. I tried to sprout them -- nothing happened. Has anyone here tried to propagate these trees from seed? Do the seeds need time in cold/freezing temps? Is there some magic incantation? Any suggestions gratefully welcomed! I want to have a whole grove of these wonderfully scented trees!