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Powdery mildew on climbing rose
Mokles
Posts: 30
Has anyone any advice on what to do with a rose with powdery mildew? It's my son's and he's wondering whether he should prune all the affected branches. They haven't had much rain where he lives so I told him to give it - and all his other roses - a good watering, but other than that we couldn't find any other advice on the internet apart from preventative measures.
0
Posts
Try spraying with a solution of bicarbonate of soda (5g in 1L of water ... with a little drop of washing up liquid.)
Hope it helps.
Bee x
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