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Can You Grow Asparagus in Ontario?
Canada · Canadian Zone 5 · zones 3, 4, 5, 6, 7
Asparagus grows as a perennial here — plant once and harvest for 20+ years.
Plant zones
Ontario last frost
Ontario first frost
Days to harvest
About Asparagus
Asparagus is a long-term investment — it takes 2-3 years to establish but then produces for 20+ years.
Plant crowns in a permanent bed — asparagus cannot be moved. Do not harvest for 2 years while it establishes. Top-dress with compost each autumn. Allow ferns to grow after harvest to feed the roots.
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 Asparagus in Ontario?
Asparagus grows as a perennial here — plant once and harvest for 20+ years.
What zone is Ontario?
Ontario spans Canadian Zone 5 (3, 4, 5, 6, 7).
When do you plant Asparagus in Ontario?
See the planting guide for Asparagus — timing depends on your exact frost date.