Desert Willow Trees

Desert Willow Bark(?) Bugs

cjranch added on September 22, 2017 | Answered

I live in southern NM & have more that 16 desert willows in my yard. They have been here for at least 10 years. Recently, I noticed what looked like mud on their bark. When I brushed it off, I saw thousands of very tiny, dark bugs. Should I be worried? If so, what should I use on them?

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Certified GKH Gardening Expert
Answered on September 26, 2017

The black on the bark is likely Sooty Mold, which is generally caused by a Scale or Aphid pest.
I would treat them with Neem Oil.

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