I saw but one butterfly in my yard all last summer. It isn't for lack of plants they like or because I use chemicals and such (because I don't), but for some reason I don't know. This year my gardens are just buzzing with birds, bees and butterflies, and it's so wonderful! I've had red admirals, swallowtails, monarchs, Snowberry clearwing moths and cabbage whites and lots of big furry bumblebees and birds nearly every day.
Note to all humans....insect life will persist long after homo sapiens has poisoned itself out of existence.
