Holly Bushes

What Causes a White Rectangle Spots on a Holly Bush


beck added on June 27, 2012 | Answered

This has killed two of my shrubs and has spread to the other four. How do I get rid of it?


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ANSWERS
Nikki
Certified GKH Gardening Expert
Answered on June 28, 2012

It is possible that it is scale or mealybugs. I like to treat both with neem oil. It is very effective and safe. These articles will help:
https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.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

If the spots are powdery in nature, then it may be powdery mildew, which neem oil will help with as well.

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