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Gardening Know How Questions & Answers - https://questions.gardeningknowhow.comPlanted a new lilac bush 5 days ago. Originally, noticed some black spots on the leaves so removed those leaves and planted the bush. 5 days later the leaves keep getting black spots. Is this a fungus or insect problem? I don’t see any insects on the leaves. Should I return the bush or is it fixable?
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URLs in this post:
[1] http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/management-of-leaf-spot-diseases/: http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/management-of-leaf-spot-diseases/
[2] https://www.gardeningknowhow.com/ornamental/shrubs/lilac/common-lilac-problems.htm: https://www.gardeningknowhow.com/ornamental/shrubs/lilac/common-lilac-problems.htm
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1 Comment To "Lilac Bush and black spots"
#1 Comment By Downtoearthdigs On 02/28/2016 @ 12:18 am
This could very well be both issues. A stressed plant for either an infestation or disease can be attacked with multiple issues.
The black spots, that you are spreading and the distortion in the leaves are indicators of a bacterial leaf spot and or insects.
I would absolutely send this plant back for a replacement.
Discard any plant material that has dropped from the tree to avoid contaminating any other plants in your yard.
Here are some links to help you.
http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/management-of-leaf-spot-diseases/ [1]
https://www.gardeningknowhow.com/ornamental/shrubs/lilac/common-lilac-problems.htm [2]