Shifty Mut: Thanks for the info. This was a little unplanned but I'm looking forward to watching it all. I'm easily entertained
Just wanted to caution you that you don't need to worry if your caterpillars are motionless for a couple of days. They position themselves often upside down (head pointing downward on a stem) or on the underside of a leaf and stop eating for about two days and don't move. They are getting ready to molt. Once they shrug themselves out of their old skin they rest for a few hours (it must be hard work), then they will sometimes turn around and eat it. Mine often don't, but sometimes they do. It's supposed to be good for them.
Another thing is that when the caterpillar has become a chrysalis, DON'T TOUCH IT! Because the chrysalis is full of liquid inside and if you even touch it lightly it will break, the fluid will leak out and the chrysalis will be dead. It takes about two days for the chrysalis to harden. If you want to protect the chrysalis inside, after two days slide a razor blade or sharp tiny scissors where the silk is attached to the wall or whatever it is attached to. Wrap some dental floss carefully but snugly around the stem and hang it up someplace safe. In two to three weeks the butterfly will emerge.
It usually takes about ten minutes for the butterfly to climb out of the chrysalis. If the butterfly has a disease or is unhealthy it will have a struggle getting out of the chrysalis. Sometimes the chrysalis sticks to their bodies and they cannot get it off. The butterfly won't survive. The kindest thing to do to stop the suffering is to gently put the butterfly in a zip lock plastic bad and put it in the freezer. It will go to sleep and eventually die without pain.
The same thing applies if you see a caterpillar writhing in pain. Don't mistake this for wriggling out of its skin when molting. But really writhing in obvious pain. Turning itself over and over and back and forth. This usually means internal parasites that will eventually eat their way out of the caterpillar's body. Put the caterpillar in a zip lock bag and freeze it. Once it is dead put it in the garbage and not outside in your yard. You don't want to potentially be spreading pathogens outside.
It's tough surviving Mother Nature.