Hi! I'm new to this board also. I've been raising black swallowtails for a couple of years, but when I found two monarch caterpillars last year, I was hooked. My swallowtails lay their eggs on my parsley plants. Last year, I had a few of them that had the green stuff too. However, they didn't die and I had several in the same cage, and only one had the green stuff. It happened more than once too.
This summer I planted a monarch waystation in my backyard and have started one at the school I work at (haven't applied for certification yet). I also read that monarchs lay one egg per plant. I too have found several plants that have more than one egg.
I do have a question though. I didn't get my milkweed seeds planted in my garden until late April/early May so they are quite small. The largest is probably around 18 inches tall. I'm worried that I won't have enough milkweed for my cats. I have several different kinds of milkweed growing in my garden. So my question is......If I run out of milkweed, and I have to go find some in a field, do they have to have the same kind of milkweed that they had been eating, or will any milkweed do?
One other question....Is it better to bring the eggs/cats in to a butterfly pavillion, or let them mature on the plant? With my swallowtails, I usually bring them in when they are still eggs. Last year I had 35 eggs at one time, and I nursed them and divided them up between all the teachers, and we only lost 1.
Sorry for a lengthy first post. If I did anything wrong or broke any rules, please let me know. I look forward to a long, fulfilling relationship with all of you. It's so nice to get to share the excitement of finding eggs, or watching one pupate, etc. with others that find it equally exciting. I think my neighbors thought I was nuts to turn my vegetable garden into a monarch waystation. However, they have noticed the beautiful butterflies in my yard. I think some of them are starting to get it!