Is it still in a pot? Young potted roses are vulnerable to heat--make sure you keep it well watered until you can get it into the ground.

Yes, it's still in the pot. I was going to give it a little time to settle in before planting it in the ground. Don't want to shock it too much. I looked at it a little bit ago, and the wilting is gone! I guess it really WAS in need of water. Thank you! The remaining wilted spot, I think, was just damage because they were all squished together. I cut that part off.

It will probably wilt and sulk for a little while after you plant it too. Don't be discouraged, it will bounce back.