Tag Archives: control of powdery mildew

Coreopsis disease

Hi, I had planted native plant Coreopsis lanceolata this spring. It developed some disease so the leaves became kind of gray/white. The new growth did not have that color, but most of the leaves did. It still bloomed well. Is…

Powdery Mildew on potted indoor Rosemary plant

Good morning. I live in Toronto and have a 3-4 year old potted rosemary that I have been successfully overwintering indoors. Right now though, it is rapidly getting overcome by powdery mildew- worse at the top- and it needs immediate…

Damaged serviceberry branch

Hello – Thank you for reading my question. I was hoping for your advice regarding this Downy serviceberry branch that I realize we should have wrapped when it was first damaged during some construction. It’s now a black gash and…

Phlox

My phlox leaves are going yellow what could be the problem?…

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…