Will Dormant Spray Prevent Powdery Mildew on Ninebark?

Hello – I have a lovely purple ninebark (could be diablo) and the last couple of years it’s suffered badly from powdery mildew which I didn’t detect until it was well advanced. I wondered whether (a) applying dormant spray now…

Infestation of Euonymus in planter

I live in a Leslieville townhouse in Toronto and our outdoor space is on the roof where we have a small euonymus tree. (We did not purchase the tree it came with the house so I don’t know the specific…