Your comments about Tropical milkweed have been found to be incorrect. Research by Jaap de Roode鈥檚 lab at Emory University, confirmed that butterflies that are infected by OE tend to prefer the tropical milkweed even more than usual. However the tropical milkweed has been found to be 鈥渕edicinal鈥 in terms of improving parasite resistance suggesting that they are self medicating their offspring. In the final analysis they determined the effect is certainly real. This is not to suggest that you should only plant tropical milkweed but some balance of the two to help them fight OE.
Your comments about Tropical milkweed have been found to be incorrect. Research by Jaap de Roode鈥檚 lab at Emory University, confirmed that butterflies that are infected by OE tend to prefer the tropical milkweed even more than usual. However the tropical milkweed has been found to be 鈥渕edicinal鈥 in terms of improving parasite resistance suggesting that they are self medicating their offspring. In the final analysis they determined the effect is certainly real. This is not to suggest that you should only plant tropical milkweed but some balance of the two to help them fight OE.