I planted asclepias incarnata here in my south bay garden and orange aphids killed it within a month. Maybe not a great choice anyways, since it requires a lot of water.
I planted some in my yard up in New England, where it’s native. It’s spread nicely, and seems to act as a “sink” for aphids, keeping them away from other plants. They flock to it but don’t appear to seriously damage the plant’s ability to do its thing.