It's in the same family, JT. There are lots of milkweeds. I believe the ones she is offering may be annuals. We have a native here is Georgia that is red/orange/yellow, that is a perennial. I grew Mexican milkweed and still get one or two volunteers a year. It is an annual and is brilliant yellow, and the butterflies love it. I will have to see if I have any volunteers out in the gardens............. I put down pre-emergent last Fall and it has worked ..........very few weeds but also likely no volunteers!
Sandy does have a pink Butterfly Bush/buddleia for you in a 3 gallon pot, JT!
~Brenda