lilac bushes with black spots

One of the three lilac bushes I just planted is showing black spots that go through the leaves. There is no sign of aphid infestation or any bug that would be causing the spots. What would it be? Thanks.

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1 Comment To "lilac bushes with black spots"

#1 Comment By Downtoearthdigs On 05/07/2015 @ 12:32 pm

I believe your lilac may have a bacterial blight, which can be treated with a copper fungicide.
Read the links below to identify it specifically.

https://www.gardeningknowhow.com/ornamental/shrubs/lilac/common-lilac-problems.htm ^[1]
http://extension.oregonstate.edu/gardening/how-recognize-treat-and-avoid-lilac-bacterial-blight ^[2]

http://www.extension.umn.edu/garden/yard-garden/trees-shrubs/management-of-leaf-spot-diseases/ ^[3]

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URL to article: https://questions.gardeningknowhow.com/one-of-the-three-lilac-bushes-i-just-planted-is-showing-black-spots-that-go-through-the-leaves-there-is-no-sign-of-aphid-infesta/

URLs in this post:

[1] https://www.gardeningknowhow.com/ornamental/shrubs/lilac/common-lilac-problems.htm: https://www.gardeningknowhow.com/ornamental/shrubs/lilac/common-lilac-problems.htm

[2] http://extension.oregonstate.edu/gardening/how-recognize-treat-and-avoid-lilac-bacterial-blight: http://extension.oregonstate.edu/gardening/how-recognize-treat-and-avoid-lilac-bacterial-blight

[3] 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/

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