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Can You Grow Watercress in Ontario?
Canada · Canadian Zone 5 · zones 3, 4, 5, 6, 7
Watercress grows well here if you keep its roots constantly wet — ideal for a shade container garden.
Plant zones
Ontario last frost
Ontario first frost
Days to harvest
When to plant Watercresses in Ontario
Direct sow
Harvest
Dates are approximate, based on Ontario's average frost dates. Your exact yard may vary by microclimate.
About Watercress
Watercress is a peppery, nutrient-dense aquatic green that loves cool, running water and partial shade — an easy container crop if you keep it constantly wet.
Grow in a container of rich soil kept standing in water, refreshed regularly. Harvest outer leaves often. Prefers cool shade to hot sun.
Gardening in Ontario
Ontario spans several climate zones. Northern Ontario is Zone 3-4 with short seasons; southern Ontario is Zone 5-7 with long productive seasons. The Niagara Peninsula is one of Canada's premier fruit-growing regions.
Frequently asked questions
Can you grow Watercress in Ontario?
Watercress grows well here if you keep its roots constantly wet — ideal for a shade container garden.
What zone is Ontario?
Ontario spans Canadian Zone 5 (3, 4, 5, 6, 7).
When do you plant Watercresses in Ontario?
Plant Watercresses Apr 15, harvest May 15 – Jun 14.