Holly Bushes
Q.

Holly leaves

Anonymous added on June 5, 2015 | Answered

The holly leaves are covered on the top with a black soot like covering which will rub off. Underneath the leaf I notice white deposits, not spots but small lines, which also rub off. Thank you.

    A.
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    Downtoearthdigs
    Certified GKH Gardening Expert
    Answered on June 8, 2015

    It sounds like sooty mold, which is a symptom of several kinds of pests, such as scale or mealy bugs, that can attack hollies. I recommend treating the plants with neem oil. This will kill any pests on the plant and treat the sooty mold as well. These articles will help: https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm
    https://www.gardeningknowhow.com/plant-problems/disease/how-to-get-rid-of-sooty-mold.htm
    https://www.gardeningknowhow.com/plant-problems/pests/scale-bug-how-to-control-plant-scale.htm
    https://www.gardeningknowhow.com/plant-problems/pests/mealybugs-white-residue-on-plants-leaves.htm

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