Powdery mildew on my trumpet vine.

I live in north Toronto and have a 10 year old trumpet vine Growing on my iron fence, so it gets plenty airflow. Sun in the morning until 1:00PM, then shade. What can I do to avoid the spread? Is…

Ninebark bush

There is a powdery substance on the bottom leaves of our Ninebark bush. Can you suggest anything I could make or buy or make to solve this problem?…

Purplelicious Veronica

I have several Purplelicious Veronica plants that were planted last summer. They survived the winter and looked fine for the first several weeks but now the first growth looks yellow and unhealthy. Last summer I had a problem with mould…