I don't mean to be flipant but columbine from seed is easier thn crabgrass. They self seed all over the place in the garden. Indoors, just sprinkle on top of "dirt": don't cover...they need light to germinate. I "tamp down" my seed sowing mix before I sow seeds that need light to germinate. That way the seeds won't fall down some crevice. Al Tompkins Easley, SC zone 7 (everything is in bloom...hope we don't get a frost)