Holly Bushes
Q.

Holly Tree Nodules

Anonymous added on April 18, 2014 | Answered

What are the nodules on Holly Tree branches? They seem to exhude a glossy substance that looks like something has been sprayed with varnish. Is this a natural thing or something damaging to the tree? What, if anything, is any treatment?

A.
A.Answers to this queston: Add Answer
Nikki
Certified GKH Gardening Expert
Answered on April 18, 2014

It sounds like you may have pests, perhaps scale or mealybugs. I would recommend neem oil. I have found it to be very effective against these pests. Here is more information on it: https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm For additional information on scale bugs, which commonly affect these plants, here is an article that you may find helpful: https://www.gardeningknowhow.com/plant-problems/pests/scale-bug-how-to-control-plant-scale.htm

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