Black spots on Swamp Milkweed

Asked September 9, 2019, 1:12 PM EDT

What is causing these black spots under the leaves of my Swamp Milkweed?

Anne Arundel County Maryland

1 Response

The black spots on the leaves may be due to some minor leaf spots and there may be some insect feeding. It is late in the season and the plant can tolerate this type of damage. No control is necessary. Monitor the growth of the plant next season and send us photos if you notice additional symptoms.

Marian