I had some caterpillars on my milkweed up until about two weeks ago.
Now there are eggs on the plants but they aren't hatching. I have had
several Monarchs laying eggs every day and I even brought in some of
the plants with eggs on them but they aren't hatching either.
I read an article several days ago that wasps will find the eggs and
inject them and kill the larve before they can even hatch.
Is this true?
If so, in order to save them do I have to watch and take the eggs off
the plants as soon as they are laid? I don't recall having this problem
last year (which is when I started my butterfly garden). I have about
300 mw plants - all empty.