I was surprised and delighted to see what looked like Monarch caterpillars munching away on the butterfly weed this afternoon. At first I was confused since I thought they only dined on milkweed. Then I looked it up and found out butterfly weed is Asclepias tuberosa. Once again paying attention to that pesky Latin can come in handy, since its Latin name clearly shows it's in the milkweed family. Doh!