Black walnut toxicity

Our small Cambridge back yard is next to a black walnut tree and we want to expand our small single raised bed to several beds to develop a bit of a permaculture food mini-forest and increase our veggie production. We…

Toronto Tree Planting Notice

There are 2 mighty Austrian Pines between the 2 arms of my semi-circular driveway (which we originally planted ourselves, transporting them in a station wagon). Later we had a crab apple tree planted between them. It eventually became kind of…

Replacement of a City Tree *

The tree on my front lawn recently came down. It was a small leaf linden. We are devastated to lose a tree, but it is an opportunity to plant what I want. They have suggested a freeman maple or a…

Using Leaves as a Winter Mulch

This Toronto Master Gardeners’ guide discusses whether gardeners should put their fall leaves onto garden beds to protect their beds during winter. Like many gardening questions, the answer is a bit subtle. What to do with your leaves depends on:…

Powdery mildew on ornamental plants

Characteristics of powdery mildew  Powdery mildew is a common fungal disease that infects a broad spectrum of plants, including trees and shrubs, perennials, grasses, fruits and vegetables. It is not a single disease but is caused by a group of…

Tar Spot of Maples

Characteristics of tar spot  Maple tar spot is a common fungal disease caused by three related fungi in the genus Rhytisma. The symptoms may vary slightly depending on the strain of the fungus but all three fungi produce dark, slightly…

Amending poor soil

My small front garden soil needs amending.  I got some compost from the city but would like to know what type of soil to buy (black earth, triple mix etc…) and what ratio should I use with the city compost?…

Groundcover under red maple

We have a patch of garden under a Red Maple that has recently been trimmed to let some sunlight in. Before the City of Toronto planted the tree about 20 years ago, it supported a thriving vegetable garden. Gradually, the…