Q.A form of garden blight due to wet, cool winter has invaded my garden. What can I do about it?
Leaves have turned brown on many of my garden plants, especially my clematis and lilac trees. Do I treat the soil or the plants themselves?
Downtoearthdigs
Answered on July 21, 2017
These links may help you identify the issues.
https://www.gardeningknowhow.com/ornamental/vines/clematis/clematis-wilt-treatment.htm
https://www.gardeningknowhow.com/ornamental/shrubs/lilac/common-lilac-problems.htm
I would also suggest talking with your County Extension Office. They can help you with a soil test and can look at leaf samples for you.
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