Yes! :( I had milkweeds that came into my yard the last 2-3 years and this year they all died. Looked like they were burnt. Yesterday I walked and came upon a field of milkweeds that had a black mold on them. The ladybugs were turning to yellowish or change in their pigment. Probably why I had a monarch caterpillar in my garden (early) as opposed to the milkweeds that were close by.