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Stewardship biologists at Mersey Tobeatic Research Institute and Parks Canada created the Butterfly Club to encourage local people to grow gardens with swamp milkweed, a non-noxious weed that is beneficial to Monarch Butterflies.

When they join, members have to sign an agreement that gardens will only be grown further than 20 meters from major roads (to avoid road-kill), and that pesticides and herbicides will not be used (to avoid harm to insects).