Anybody have experience collecting seed and growing it in the garden? I found a wild patch of Pycnanthemum muticum at my town park, and although I wouldn't ever dig and move wild plants, I think it would be OK to collect some seed.
I also saw Asclepias syriaca in bloom everywhere, but no Monarch caterpillars. However I did finally see an adult for the first time this year. Halleluja!