Holly Tree Nodules

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?

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1 Comment To "Holly Tree Nodules"

#1 Comment By Nikki On 04/18/2014 @ 6:46 pm

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 ^[1] 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 ^[2]

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[1] https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm: https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm

[2] https://www.gardeningknowhow.com/plant-problems/pests/scale-bug-how-to-control-plant-scale.htm: https://www.gardeningknowhow.com/plant-problems/pests/scale-bug-how-to-control-plant-scale.htm

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