Thanks for replying, I didn't see this one.
This is why I planted seeds early in the spring and then transferred the seedlings to tubs. Now, I have plenty of fresh milkweed. I've been pulling these into my tent, letting the Monarchs lay, and then covering the eggs with a sleeve. Do try to make sure there are no predators. This can be hard. I've lost so many butterflies to tiny spiders, who later I was able to see because they ate my caterpillars.
Herndon, VA (USA)
Take care of the small things....