Ask Categories: Pests & Diseases

Mold on a pear tree

We found this hairy mold on the bark of our pear tree. It was only in one spot. Can you tell me please what is that? Is it dangerous for the pear tree? Do we need to spray the tree?…

Cucumber beetles

What products are available in Canada that kill cucumber beetles at their larval stage? I’d like to kill them before they emerge from the ground. Thank you!!…

Pine bark infection

Hi, My white pine is showing what seems to be a fungal infection. First bark only on one branch turned white, but after a year multiple branches are white. I am very worried, since it is a beautiful and very…

Viburnum drooped young leaves

Hi, I live in North York. I planted native Viburnum lentago last year and moved it a bit this year. It was doing quite well all the time, but after that big storm in Toronto I noticed that the very…

growing potatoes from cuttings

I’ve been enjoying the idea of growing potatoes from adding cuttings of potato eyes to my soil. Small potatoes grew from cuttings last year, and it looks like I’m on my way again this year. However, I’ve been told that…

Boxwood Leaf Miner

Hi and thanks for reading my question. I have one set of two boxwoods that are about 4 years old that I transplanted from containers to garden bed and another set of three that I planted last spring. I have…

Cedar tree with dead branches on one side.

H. I have cedar trees that have dead branches only on one side. That is the side that is not exposed to the sun. The other sides look great and healthy. The trees are about 18 years old and plantes…

Boxwood caterpillar

Hello, I just today realized that the deterioration of my 10 boxwoods shrubs this spring is because of box tree caterpillar. At this point they are about 30-50% decimated. I see that there is an organic treatment called BTK available…