What great timing! I gave in and bought a couple of these the other day. I literally planted them two days ago. The first day, I had a Spicebush Swallowtail on them! And today I saw the male Ruby-Throated hummingbird checking them out! So far they've transplanted really well, especially considering it's getting in the upper 80's out there. I've got them in part shade as part of my butterfly garden. Most things wilt and lose all their flowers when I transplant them in this kind of heat, but so far, so good!
Here's the Spicebush Swallowtail giving them a taste.
Here they are right after being planted.