Don't cut down the milkweeds that have eggs and caterpillars, however! Personally, I think the Monarchs don't time their migration according to the availability of host plants. Some experts have mentioned day length and temperatures inducing migration.
I would feel more optimistic about a bright future for man if he spent less time proving that he can outwit Nature and more time tasting her sweetness and respecting her seniority. E. B.White
Integrity can never be taken. It can only be given, and I wasn't going to give it up to these people. Gary Mowad