Forsythia Bushes
Q.

Forsythia turning black

Zone ct. | dick3093 added on May 15, 2012 | Answered

My forsythia bush leaves are turning almost black. What causes this, and what can I do?

A.
A.Answers to this queston: Add Answer
Nikki
Certified GKH Gardening Expert
Answered on May 15, 2012

Are they soot-like? If so, this could be sooty mold. It is a byproduct of a pest infestation, likely aphids or scale. This article will help you with getting rid of it: https://www.gardeningknowhow.com/plant-problems/disease/how-to-get-rid-of-sooty-mold.htm

Neem oil can help as well. In addition to treating whatever pests may be affecting the plant, it is also a good fungicide, which will help in the event that this is caused by some other type of fungus. Here is more information: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

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