I have to agree with Mona. The Milkweeds are a beautiful plant, but many others that are just as beautiful if you are not a butterfly lover. Of my 75+ milkweed plants, most of them have the bottom half of their leaves gone from me picking them in order to keep 200 cats fed daily. I even stop occasionally at a wild patch so that I don't have to use all of mine up. I say, let the cats eat and nature replenishes with nice tender shoots that may also blossom yet again.
If I stopped collecting eggs today, I have the potential to have reared over 550 this summer. Imagine if June would have been better!
So if ya' grow milkweed, expect and welcome, the little chubby munchers.