Climbing rose pest problem

I live in Waterloo, Ontario. I have a climbing rose that is a prolific grower and bloomer ( I don’t know the exact variety). It has southern exposure against a brick wall. The soil is pretty good – I think.…

Roses

I have 6 iceberg roses growing in pots on my terrace. Last summer a number of them had black spot. Do I respray when the leaves come out? How often? What about the soil?…

Diseased leaves in yard waste?

A maple tree in my neighborhood has black spots on its leaves. Are they diseased? Should the dry leaves go into garbage or yard waste? I have a problem with black spot on a rose bush. Is it connected? What…

Black Spot on Roses*

I have a friend that has never had black spot before on their roses, and this year they have Black Spot. What can you suggest — to treat this condition.…