Planting dates for Winnipeg
Frost dates and sow windows from the 30-year record at Winnipeg Richardson Intl Airport, the official station 7 km from Winnipeg, Manitoba.
Sow and transplant events for the staples, straight from this page.
Key windows for Winnipeg (2026)
| Crop | Start indoors | Plant out / sow |
|---|---|---|
| Tomato | April 11 | May 30 |
| Pepper | March 28 | June 6 |
| Peas | – | April 18 |
| Lettuce | March 28 | April 25 |
| Carrot | – | May 2 |
| Bush beans | – | May 30 |
| Garlic (longer than the average season; use short varieties) | – | Fall planted |
| Potato | – | May 9 |
Mean-date planning windows, not guarantees; watch the local forecast at the shoulders. Method on the methodology page.
Winnipeg planting questions
When is the last frost in Winnipeg?
Around May 23, the 30-year mean date of the last spring frost at Winnipeg Richardson Intl Airport, the official station 7 km from Winnipeg. Half of years see frost after the mean, so tender crops usually wait a week or more past it.
When can I plant tomatoes in Winnipeg?
Start seeds indoors around April 11 and transplant around May 30, once nights hold above 10 C. The full 32-crop table on the planner computes every window for Winnipeg.
How long is the growing season in Winnipeg?
About 121 frost-free days on average, from roughly May 23 to September 22. Crops whose days-to-maturity exceed that window need transplants, short-season varieties, or season extension.
How this page was made
Every date above is computed from the Environment and Climate Change Canada Canadian Climate Normals at Winnipeg Richardson Intl Airport: the 30-year mean dates of last spring and first fall frost, with crop offsets from standard horticultural practice. Full method and crop sources: data and methodology. These are planning averages, not forecasts: half of years frost later than the mean, so harden off transplants and watch the local forecast at the shoulders of the season.
More for Winnipeg: winter tire dates. Need every crop, or a different place? The full calendar covers 32 crops at 638 stations.