Good luck I wish we had them up here but it's do dang cold here in the winter.
Jacob

Jacob,

I wondered if they would return here, as we had extreme cold (for our area) last winter. But as soon as the vines began to grow, there were the little clusters of eggs clinging to the tips of new growth.

I think these are some of most interesting cats to raise. They line up together when tiny and feed on the leaf, constantly eating it seems. As they get larger, If you stand close to them, you can hear a loud clicking sound emitted when they eat. Sounds like teeth clicking! You can 'hear' this clicking sound on the video linked below.

Do you mean too cold for the vines or for the butterflies?

Mary

Here is a link that might be useful: short video of munching Pipevine Swallowtail Cats

Hi
I'm not sure pipevine can grow here.But one of my local nurseries last year carried pipvine, I didn't know if it would survive and it was to much money. Even if I got the vine to grow I'm pretty sure I wouldn't get eggs to raise.
Jacob