The Coral Gables Library has a butterfly garden and it's full of butterflies. I like the iron butterfly but the plants around it are a bit scruffy. What do I know, it was full of butterflies. I have some native milkweed in my own garden and every time that it sprouts a few new green leaves or buds the caterpillars appear, and strip the plants bear. I have plenty butterflies in the garden but too many caterpillars. They run out of food before they're mature.