Jesse Argent owns Havenloft Tree Nursery in Charlottetown, which specializes in growing black walnut trees. His company grows the saplings and sells them to property owners as long-term investments.

Maria Krajewska's black walnut tree, stripped of its leaves and nuts at this time of year. (Lorenda Reddekopp/CBC News) Maria Krajewska can't stand the black walnut tree in her backyard.

The volunteer black walnut sapling in our front yard arrived courtesy of a local squirrel. Deep into its third spring, it looks like the kind of tree a child would draw: a narrow trunk topped by a ...