Emerald cedars and black walnut tree

Cedar hedge has grown thin and is brown in one spot that is located close to a black walnut tree. Is this type of cedar at risk from the toxicity of the tree?…

Brandon Cedar

Is it safe to plant Brandon Cedar trees under the Black Walnut trees?…

Tree Identification

Good Morning, Could you help to figure out what kind of the tree (as attached) is? I try to buy a similar one for my backyard. Thanks Ren…

Walnut Tree – Potential Problem

Hello! I have extensive gardens around my house, which I bought 3 years ago. I removed all the grass on the property, and instead landscaped with perennials, shrubs and small trees. The neighbour behind my house has a small shed…

Black Walnuts Popping Up All Over The Place

Dear Master Gardeners, I’m a volunteer gardener at my Toronto apartment building. The problem that I’m going to tell you about is situated in a large concrete planter which hugs the side of my building; the planter is quite large;…

Black Walnut Resistant Grass

Hi, I have a shady back yard that is pestered by a Black Walnut tree on my neighbors yard. I am looking for suggestions of what grass I could grow that would survive albeit some additional tlc. I read this…

planting under black walnut

I understand redbud can be planted under black walnut. Can a weeping redbud work, knowing it is grafted on another type of tree, will the graft take the blackwalnut as well. If garden is on hill will this help with…

Juglone and Black Walnut: A Toronto Master Gardeners Guide

Are the tomatoes in your neighbour’s garden doing much better than the ones you planted next to your black walnut tree? The problem may be due to juglone, a chemical naturally produced by the black walnut tree. The largest amount…