Common Buckthorn is one of Kingston's more-than-human neighbours. They were brought here in the 1880s as windbreaks and hedgerows, put to work, then forgotten. Now they're one of Kingston's Prohibited Plants. Their presence is a diagnosis: disturbed ground, a missing berry seed bank, deer pressure, a canopy with bare ground below. These kin cards are an invitation to get to know them and to read what their presence is telling you.
Common Buckthorn kin card
Forty-six species of birds eat their carbohydrate-heavy berries. In fall, Buckthorn berries don't supply the lipid-rich fuel that Dogwood, Viburnum, and Spicebush provide to migrating birds. In winter, that shifts: overwintering birds need carbohydrates, and Buckthorn is among the few shrubs still carrying fruit. As a result, Robins, Cedar Waxwings, and Bohemian Waxwings spread their seeds throughout the landscape.
📥 Download Buckthorn Kin Card (PDF, 105KB)
Common Buckthorn at the planning table
What would it take for Kingston to read Buckthorn's presence as a diagnosis rather than a problem to solve? For every fence line, woodland edge, and clearing to be understood as a gap waiting to be filled? For replanting, not only removal, to be the measure of success?
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