diseased shrub - Knowledgebase Question

Riverton, Ne
Question by adair5481
July 6, 2010
holly bush and a yew: leaves/needles are black with white small bead sized raised dots in underside of shrubs;outer parts look fine....


Image
Answer from NGA
July 6, 2010

0

Sounds like insects are feeding on your plants. Scales or mealybugs can exude a sticky substance called honeydew which turns black as it ages. The way to get rid of the black sooty mold is to control the insects. You can spray with an insecticide or use a soil drench to control the pests. Bayer Advanced Tree and Shrub Insect Control is one such product but there are others on the market. Best wishes with your shrubs.

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