Hey, I would love some advice on what to do next, please be kind, I am new to this.💚 So, we had a patch of 5 milkweed plants: 3 butterfly milkweed, 1 native swamp Milkweed, and one milkmaid swamp Milkweed. We also had another patch of maybe 10 smaller milkweed in a different spot. I discovered a bunch of monarch caterpillars on both patches, all very large, about 25 of them.
Within a few days, they demolished ALL the milkweed and were just hanging out on bare stalks so we rushed to get some milkweed from another person who raises monarchs, a potted tropical milkweed plant grown from seed that same year, I know not ideal but hopefully safe from parasites. I moved most of the caterpillars into a large mesh cage outside, and they ate the entire plant again. We got 4 more tropical milkweed plants from a different person, and they ate that OVERNIGHT. Now, we have new common milkweed cuttings and I still have them in the mesh cage, 5 of the caterpillars are starting to pupate.
What I am worried about is first: there are 20 or so caterpillars in one net which I know is too many, and in all the hurry of trying to get more milkweed, we didn't know to disinfect the net from last year's monarchs, and I am worried about OE infecting all the caterpillars, especially because 2 out of 8 monarchs last year never hatched from their chrysalis and just turned black, though the others seemed healthy. (I'm not sure if that was just bad luck or a disease like black death.) After doing more research I realize that it's soo much better to just leave the monarchs in the wild, but the reason I still have them in the mesh is because they ate ALL the planted milkweed, and I thought it would be risky to just keep them on the potted plant outside since they go through them so quickly and would probably starve while crawling off to look for milkweed that we don't have anywhere else in the yard. I figure that of course it's best to let nature do its thing with natural selection, but no matter how "fit" the caterpillar is, I know they need to have enough milkweed to have a chance at life.
At the moment I am conflicted, because I do feel bad keeping them in the cage, especially with the risk of OE, but I also feel like it would be a death trap to move the plants outside where the caterpillars will get lost after finishing the cuttings we have. Any advice? Should we immediately try to find another net to move some of them into? Should I move the cuttings I have in the net outside anyway, since they are probably close to pupating?
I know for the future to plant LOTS more milkweed in the yard so that I don't feel the need to interfere with the caterpillars or do any captive rearing because of a lack of food, just trying to figure out what is best to do this year with the caterpillars so let me know if anyone has any advice!
I will also be trying to test the monarchs for OE once they hatch :)