I'm collecting quite a few seeds for my sorta rock garden. The big one I'm hoping to get to grow this year is Pulsatilla. No luck last year. I'm going to try vermiculite sowing this year. But I'll wait until March for that. I'm also going to try Gentiana. My plan is to winter sow that. I grew some Saxifraga last year. I got two tiny clumps to grow. Hopefully they will make it through winter. I'm going to try and grow some more. And if I can find some Lewesia seeds I'll try that one again. I had good luck winter sowing that last year.