Stringer- it is NOT invasive, it's Native 100%.
Even if you dont get monarchs right away you WILL get other butterflies/moths/pollinators.

RAH- That is awesome. I have big plans for milkweed at the new lake smile Passionflower is also great, and super easy to propogate. I've got 8 that I've harvested into pots ready for planting at the new place frpom the 1 i purchased last spring.