pruning

Question

What should I do with a frosted bottle brush

and a Trachelospermum which has a black soot all over the leaves

I have attached photos of both any help is appreciated I liv e in Kent England

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Answer 1

This is most likely due to an insect issue. There are many that I suspect that it could be, unfortunately. This collection of articles will give you more information on making your own pesticides, fungicides, and other helpful information: https://www.gardeningknowhow.com/special/organic/