Some of my coneflowers died during late July-August. The entire stalk is...

Asked August 14, 2018, 2:46 PM EDT

Some of my coneflowers died during late July-August. The entire stalk is brown the flowers are brown, the leaves are brown. They are next to very healthy coneflowers in the same garden.

Hennepin County Minnesota plant disease echinacea

1 Response

We can't be sure what's affecting the plants by viewing the photo. However, based upon what we can see, we suspect some kind of stem or crown rot.

The following bulletin discusses diseases that often affect coneflowers and of those listed we think Sclerotinia and Sclerotium crown rot is most likely.

Compare here and see what you think: