Russian Sage - Blight or Mold?

Asked June 5, 2020, 9:22 AM EDT

Hi, I have Russian sage in my North East facing yard. It gets mold every summer and withers. It does get a lot of water. What can I do to keep these plants healthy? It is a semi- shady area. Thanks!

Anoka County Minnesota

1 Response

According to experts at the University of Washington, "Russian sage plants like a well-drained soil and need to have a warm to hot, sunny position in the garden. If the soil is too wet, root rot can occur." Consequently, it might not be possible to grow healthy Russian sage plants in the location you have described.

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The leaves shown in the photos have been damaged by insects called four-lined plant bugs. The black spots mark places the bugs have pierced the leaves to feed.

Plant bug damage

More about four-lined plant bugs: