Cats won't transition from A. curassavica to A. viridis
I have several Monarch cats on Tropical milkweed, but I'm running out of it. So I took one of the 4th instar cats and placed him on A. viridis thinking he would be ok with that. Instead, he started snapping his head up & down and eventually fell off the leaf and crawled away. Why did this happen? Can I not transition them to another type of mw?