Ask Categories: Pests & Diseases

Asian lady beetle

I found an Asian lady beetle on our sea holly and killed it. Afterwards though I wondered if that was the right thing to do. Is there still hope for the native Ontario ladybug? If so I’ll continue to kill…

Insects on Rose of Sharon

I found these bugs on my rose of sharon, on top of the leaves. Underneath them, there seems to be hundreds of eggs. They are covering about 80% of the plant. It’s in a full sun location in Niagara Falls.…

Beech tree infection

I have tried insecticidal soap to kill these bugs on my beech tree but it is not helping. I have a beech tree that has a lot of these bugs. Is there a way of removing them or are they…

Infestation on oxeye daisies

Hi Master Gardener, we have an infestation of bugs on oxeye daisies that are like mini beetles but black soft shell with whitish yellow zig zag stripes. Is there anything I can spray on these plants to kill the bugs?…

Infestation – Butter yellow coneflowers

We have an infestation of what appears to be hard very small brown bugs on the coneflowers. Looks like bits of soil but we think it’s infestation. Your thoughts would be appreciated. Thanks very much as always for freely sharing…

Thrips on strawberries

I think I have thrips on my strawberries. It’s producing stunted strawberries with brown spots. The flowers are also getting damaged. They seem to come out more in the evenings. I had this issue last year and sprayed the plant…

Cupping and white stuff on my Boxwoods

Hi there, My Boxwood are affected by a disease causing cupping of the leaves and finally they die. I can see a white powdery stuff on them too. Please let me know what remedy I can use to cure them.…

Fungus on Eastern rosebud tree

Hello, there is a grey fungus at the base of the tree. Half of the tree is now dead. Is there a way to get rid of the fungus and save the rest of the tree?…

White worm like clusters near thyme shoots

Hello! I was hoping you could help me identify what a cluster of white worm like substance that has appeared near the thyme shoots on my herb bed… Is it something I leave along? Get rid of immediately? It seems…