Sick Crabapple Trees in Toronto*
I was away during the summer and when I returned, two weeks ago, I noticed that a crabapple tree on my front lawn (Leaside) has little foliage (it was normal in May) and the trunk has holes in it made…
Ask Categories: Pests & Diseases
Misshapen Carrots*
In our community garden plots alot of carrots are misshapen. Our tomato plants also had brown leaves and branches after first fruit although some new growth with tomato came back.…
Black Spot on Roses*
I have a friend that has never had black spot before on their roses, and this year they have Black Spot. What can you suggest — to treat this condition.…
Cherry Tree Health in 2017*
Hi – I have a mature Japanese Cherry Tree in my back yard – it’d be close to a 2 foot diameter at 3 feet off the ground.
This year it started dropping leaves beginning in June and has continued…
Newly Transplanted Cedar Hedge Browning*
I had 2 rows (~200 trees) of 6-7′ Eastern White Cedars planted in my yard ~3 weeks ago. I’m somewhat concerned about the browning that is occurring on the trees. Is this simply transplant shock, or is it possible that…
Recurring Fungus on Plants *
Hi, for the past 3 or 4 seasons a black fungus has attacked my peonies and more recently my lilac bushes. I’m thinking it is an airborne problem because even container plants on my deck seemed to “catch” this disease.…
Solution for Slugs *
I’m in the Kingston area and need a solution for killing slugs in the egg stage. Ed Lawrence gave such a thing using ammonia and water. Do you know when to do this as the leaf is still not out…
Grass Seed for grub infested lawn *
We have a bad grub problem on our lawn. We face south and southwest, large corner lot in mid town Toronto. Have tried nematodes but it has not worked. We are reseeding and currently have a mixture of ryegrass, red…
Leek Moths*
Hello! I am wondering when the leek moth is predicted to be active this season in the Toronto area? I want to plan for when I will be needing to put row covers on my seedlings to ensure they cannot…