What hardiness zone is St. John's?

St. John's is in Canadian Hardiness Zone 5. Moderate – many shrubs, roses, most vegetables

When is the last frost in St. John's?

The average last frost date in St. John's is Late April (Apr 20–30). Always watch local forecasts as it varies year to year.

What vegetables grow best in St. John's?

Zone 5 gardens in St. John's do well with cold-hardy brassicas, root vegetables, and many perennials. With a short frost-free period of around 155 days, choose varieties with days-to-maturity suited to your zone.

Gardening in St. John's, Newfoundland & Labrador

Gardening in Newfoundland & Labrador

Newfoundland's rugged coastal gardens face Atlantic winds, fog, and Zone 5 conditions in the south to Zone 4 inland. Resourceful gardeners have developed creative windbreak strategies and select hardy varieties that thrive in this dramatically beautiful environment.

Gardening in Calgary

Video

Woman tending a flower garden in Calgary — Tending the flower beds

Woman picking flowers with the Calgary skyline behind her — Picking flowers, city skyline

Woman harvesting vegetables in a Calgary rooftop garden — Rooftop harvest

Planting Calendar – June 2026

St. John's

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Growing season Shoulder This month

Task	Details
Start Indoors	Succession sow lettuce every 2 weeks
Direct Sow	All warm-season crops now safe Zone 3+
Key Tasks	Mulch beds; set up drip irrigation

Frost Dates – St. John's

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Last Spring Frost

Late April (Apr 20–30)

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First Fall Frost

Mid October (Oct 10–20)

Frost-free period: Approximately 155 days. Always check Environment Canada's local forecast — frost dates can vary by 2–3 weeks depending on microclimates, elevation, and annual weather patterns.