Hosta Leaves Going Brown

I have 2 hosta that have leaves that have browned and on investigation the whole stem easily pulls away. I wonder with the heat and humidity if its Southern Blight and what fungicide should I use.…

White pine disease or pest

Hello, I had 6 white pine trees planted last fall. In my attempts to deal with the Gypsy moth infestation I had run out of insecticide and was hand removing the caterpillars from my trees. When I got to the…

Disease on purple sandcherry

A purple sandcherry has developed white, greyish dots. Dots can be easily scraped off. Portions of the tree have died off while the base is sending out many new shoots. Please see pictures.…

Is it OK to plant Impatiens in Toronto gardens?

What’s the current status about planting impatiens in the Garden in Toronto ( Zone 7)? Many varieties were hit by a virus and would frizzle after panting them. Are they free from the virus now? Can I bring them indoors…

Dwarf Burning Bush

I live in North York. In the summer my purple lace died in the front of my house due most likely to verticillium wilt per you when I phoned. The plant was removed roots and all. I need to get…

Thin black patch on apple tree

Hi I noticed this on a branch of my September ruby apple, I live in Saskatoon. I’m hoping you might be able to identify it and if it needs treating. It’s a thin black layer, almost like mildew, that you…

Potential Fungus growth on backyard evergreen

Hello, I hope this email finds you well and you are staying health. Last summer I trimmed a few lower branches of my evergreen tree. It seems that there is a fungus infection at those cuttings and I was wondering…

Phlox and powdery mildew

Lavender colored phlox grows in mostly clay soil develops mildew each year. It is in a sunny area not over watered. How can I prevent this?…

Garlic Disease

I, and my neighbours are having trouble with our garlic this year. We are located is south east Toronto, Leslieville. The picture 1 attached is of a garlic that was planted using a clove from last year’s harvest and has…