Q.Winter jasmine
The vines of my winter jasmine are turning black. Is it diseased
Downtoearthdigs
Answered on May 18, 2018
This could be sooty mold, caused by pests.
You can treat with Neem Oil.
https://www.gardeningknowhow.com/plant-problems/disease/how-to-get-rid-of-sooty-mold.htm
https://www.gardeningknowhow.com/ornamental/flowers/jasmine/winter-jasmine-care.htm
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