If it was grown with pesticides it’s possible that it seeped into the plant itself and the caterpillars ingest some of it. If you bought it from Lowe’s/Home Depot it probably came from somewhere that used pesticides unfortunately
11
Anonymous#19w
I had this plant for years and planted it to begin with it is tropical and was wondering should I just kill the plant
3
AnonymousOP8w
yeah tropical milkweed is a no-no because it’s non-native and can carry a parasite that infects monarchs :( probably the issue here