- GardenOntario – Find a local garden club
- Canadian Chrysanthemum & Dahlia Society
- Canadian Hemerocallis Society
- Canadian Iris Society
- Canadian Organic Growers Toronto
- Canadian Peony Society
- Canadian Rose Society
- Greater Toronto Water Garden Society
- Mycological Society of Toronto
- North American Native Plant Society
- Ontario Daylily Society
- Ontario Hosta Society
- Ontario Rock Garden & Hardy Plant Society
- Rhododendron Society of Eastern Canada
- Society of Ontario Nut Growers
- Southern Ontario Orchid Society
- Toronto Bonsai Society
- Toronto Cactus & Succulent Club
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