I have a large yard with about over hundred or so milkweed plants. with new ones coming up every day. We live on the Texas-Mexico border so the climate is warm and we have milkweed all year.
I usually leave it alone and let the cats have at it, but this year it's gotten really tall. Its almost as tall as I am. about 5 1/2 feet! It's very healthy and very full, but um very tall. I was going to cut it back today after church, however I ended up entertaining some guests. About 75 or more monarchs we're drinking (and mating )up a storm. I'd never seen so many (and never knew they could stay together so long).
So I guess I'll leave it alone and check for eggs tomorrow, but does everyones butterfly weed get this tall? How often do you cut it back? how tall will it get if I leave alone?