I have several White Milkweed plants that grow around my daylilies. I've had these Caterpillars on the plants for several years. when I first see them they are about 1 inch long and very small. They are orange with a few black spots. I'm going to attach a picture.
When they get about 3 inches long, I'll go out in the morning and they are all gone. They were there late afternoon before. They eat all the leaves on the Mildweed plant. I've even taken them from one plant to another so they have plenty to eat. It works really good. They just eat the week, nothing else that I know of. This photo was take June 22, 2011. They are here from May through August. I guess new groups hatch out during these months.
Does anyone know what they are?
Thanks Mona
