Growing Trees in the Urban Jungle

By Alistair Johnston

There are many challenges a tree must face to reach maturity. Whether attacked by insects or disease, animal grazing or environmental stressors, no challenge is more significant for trees than human impact. In the naturally vegetated regions of Canada, trees tend to grow to maturity in large communities where soil, nutrients, and moisture are readily available. These tree communities follow a cycle of growth, failure, and regeneration, which maintains a relatively consistent canopy area. Introduce trees into the ‘urban jungle’ and a whole new world of challenges is born.

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