The seedpods of Tropical Silky Milkweed (A. curassavica) I grew from seed this spring are starting to split. Does anyone know if they will self-sow/re-seed in Zone 6 or do I need to collect the seeds and start them early in spring again? They were initially very slow growing.ALSO!
I had a conversation with some lovely folks about raising Monarchs earlier this summer. We met at Dr. Douglas Tallamy's lecture about native plants. They questioned the validity of growing tropical milkweed in an area that they are not normally found.
Monarch butterflies would recognize them, certainly, and use the flowers for nectaring and lay eggs (which they have done in my garden). But it is REALLY good for them to do this? The northern Monarchs normally do not have access to curassavica when they migrate this far north. IS it better for them to be raised only on the species that are normally found?
As it is, there are far more A. syriaca in my garden, so they only get a taste of curassavica now and then. I try to distribute them equally -- though in community cages, some will get to eat and others will not. I read that curassavica is more toxic in another thread, so I wonder if it might help them if they get at least some during their development... but there is that natural native range issue.
I need to satisfy myself on this before growing A. curassavica again next spring.