Plum tree infestatio - Knowledgebase Question

Glen Ellen, Ca
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Question by copperwoman2
June 18, 2008
Hello Experts!,

The branches of my Santa Rosa plum tree have these little black/brown

Answer from NGA
June 18, 2008
What you are describing are scale insects. They can cause problems if the population gets quite large. The first step in scale control is to apply a dormant oil spray in the spring before growth starts. The dormant oil spray should be followed by an all-purpose fruit tree spray or the insecticide Imidan. Follow label directions - additional sprays may be needed later in the growing season. Since you've missed the window of opportunity for a dormant oil spray this year, you can wait until next winter or early spring and put your plum tree on a regular spray schedule to control the pests.

Best wishes with your tree!

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