In Winnipeg, the average last spring frost is May 23 and the average first fall frost is Sep 22, a growing season of about 122 days (zone 4a). Start tomatoes indoors around Apr 11 and move them outside from Jun 6. Plant garlic Sep 29 to Oct 6, one to two weeks after the first fall frost.
Winnipeg at a glance
- Last spring frost
- May 23 (average)
- First fall frost
- Sep 22 (average)
- Frost-free season
- About 122 days
- Hardiness zone
- 4a (NRCan)
- Weather stations
- Winnipeg Richardson (Airport), Gimli and Portage Southport, 1991 to 2020 normals. GrowSmart's dates are the median of these stations, to within 3 days
An average frost date means frost is still possible after it in about half of years. GrowSmart times tender crops like tomatoes, peppers and basil after this date, not on it.
What to plant in Winnipeg this month (January)
Nothing is scheduled to be sown or planted in Winnipeg in January. Next up: start onions indoors on Mar 14.
What to plant in Winnipeg this month (February)
Nothing is scheduled to be sown or planted in Winnipeg in February. Next up: start onions indoors on Mar 14.
What to plant in Winnipeg this month (March)
- Start onions indoors: Mar 14
Coming up in early April: start tomatoes indoors (Apr 11), start peppers indoors (Apr 11), start eggplant indoors (Apr 11) and start lettuce indoors (Apr 11).
What to plant in Winnipeg this month (April)
- Start tomatoes indoors: Apr 11
- Start peppers indoors: Apr 11
- Start eggplant indoors: Apr 11
- Start lettuce indoors: Apr 11
- Start kale indoors: Apr 18
- Start broccoli indoors: Apr 18
- Start cabbage indoors: Apr 18
- Start basil indoors: Apr 25
Coming up in early May: direct sow spinach (May 2), direct sow peas (May 2), direct sow radishes (May 2), transplant lettuce (May 9), direct sow carrots (May 9), start cucumbers indoors (May 9), start zucchini indoors (May 9) and start winter squash indoors (May 9).
What to plant in Winnipeg this month (May)
- Direct sow spinach: May 2
- Direct sow peas: May 2
- Direct sow radishes: May 2
- Transplant lettuce: May 9
- Direct sow carrots: May 9
- Start cucumbers indoors: May 9
- Start zucchini indoors: May 9
- Start winter squash indoors: May 9
- Direct sow beets: May 16
- Transplant kale: May 16
- Transplant broccoli: May 16
- Transplant cabbage: May 16
- Direct sow potatoes: May 16
- Transplant onions: May 23
- Transplant cucumbers: May 30
- Transplant zucchini: May 30
- Transplant winter squash: May 30
- Direct sow beans: May 30
Coming up in early June: transplant tomatoes (Jun 6), transplant peppers (Jun 6), transplant eggplant (Jun 6) and transplant basil (Jun 6).
What to plant in Winnipeg this month (June)
- Transplant tomatoes: Jun 6
- Transplant peppers: Jun 6
- Transplant eggplant: Jun 6
- Transplant basil: Jun 6
Coming up in early July: sow peas for a fall harvest (Jul 14) and sow kale for a fall harvest (Jul 14).
What to plant in Winnipeg this month (July)
- Sow peas for a fall harvest: Jul 14
- Sow kale for a fall harvest: Jul 14
- Sow lettuce for a fall harvest: Jul 28
Coming up in early August: sow spinach for a fall harvest (Aug 4).
What to plant in Winnipeg this month (August)
- Sow spinach for a fall harvest: Aug 4
- Sow radishes for a fall harvest: Aug 18
What to plant in Winnipeg this month (September)
- Plant garlic: Sep 29 to Oct 6
What to plant in Winnipeg this month (October)
- Plant garlic: Sep 29 to Oct 6
What to plant in Winnipeg this month (November)
Nothing is scheduled to be sown or planted in Winnipeg in November. Next up: start onions indoors on Mar 14.
What to plant in Winnipeg this month (December)
Nothing is scheduled to be sown or planted in Winnipeg in December. Next up: start onions indoors on Mar 14.
Winnipeg planting calendar
| Crop | Start indoors | Plant outside | Harvest |
|---|---|---|---|
| Tomatoes | Apr 11 | Transplant Jun 6 | From Aug 23 |
| Peppers | Apr 11 | Transplant Jun 6 | From Aug 17 |
| Eggplant | Apr 11 | Transplant Jun 6 | From Aug 20 |
| Basil | Apr 25 | Transplant Jun 6 | From Jul 18 |
| Onions (from seed) | Mar 14 | Transplant May 23 | From Aug 31 |
| Lettuce | Apr 11 | Transplant May 9Fall: direct sow Jul 28 | From Jun 18Fall: from Sep 6 |
| Spinach | n/a | Direct sow May 2Fall: direct sow Aug 4 | From Jun 11Fall: from Sep 13 |
| Peas | n/a | Direct sow May 2Fall: direct sow Jul 14 | From Jul 1Fall: from Sep 12 |
| Radishes | n/a | Direct sow May 2Fall: direct sow Aug 18 | From May 27Fall: from Sep 12 |
| Carrots | n/a | Direct sow May 9 | From Jul 18 |
| Beets | n/a | Direct sow May 16 | From Jul 10 |
| Kale | Apr 18 | Transplant May 16Fall: direct sow Jul 14 | From Jul 10Fall: from Sep 7 |
| Broccoli | Apr 18 | Transplant May 16 | From Jul 20 |
| Cabbage | Apr 18 | Transplant May 16 | From Jul 25 |
| Cucumbers | May 9 | Transplant May 30 | From Jul 24 |
| Zucchini | May 9 | Transplant May 30 | From Jul 19 |
| Winter squash | May 9 | Transplant May 30 | From Aug 28 |
| Beans | n/a | Direct sow May 30 | From Jul 24 |
| Potatoes | n/a | Direct sow May 16 | From Aug 4 |
| Garlic | n/a | Plant cloves Sep 29 to Oct 6 | Around Aug 15 the next year |
Dates are for one planting of each crop, from Winnipeg's average frost dates. Tomatoes are indeterminate, lettuce is looseleaf and beans are bush beans. Harvest dates are when the first picking is usually ready. Garlic follows University of Minnesota Extension (see below).
Fall planting in Winnipeg
Plant garlic Sep 29 to Oct 6. That is one to two weeks after Winnipeg's average first fall frost of Sep 22, the timing University of Minnesota Extension recommends, so the cloves root before winter without sending shoots up. Harvest comes around Aug 15 the following summer. How to plant garlic in Winnipeg.
Shallots: GrowSmart's plan has you plant shallot sets in fall in zone 5 and warmer, and in spring in colder zones.
Cool-season crops GrowSmart schedules for a fall harvest in Winnipeg:
- Peas: sow Jul 14, ready from about Sep 12
- Kale: sow Jul 14, ready from about Sep 7
- Lettuce: sow Jul 28, ready from about Sep 6
- Spinach: sow Aug 4, ready from about Sep 13
- Radishes: sow Aug 18, ready from about Sep 12
Nearby planting calendars
Winnipeg planting questions
When is the last frost in Winnipeg?
The average last spring frost in Winnipeg is May 23, and the average first fall frost is Sep 22, from 1991 to 2020 climate normals at 3 nearby weather stations. Frost is still possible after the spring date in about half of years.
When should I start tomato seeds in Winnipeg?
Start tomatoes indoors around Apr 11, 8 weeks before moving them outside around Jun 6, which is two weeks after the average last frost.
What can I plant in Winnipeg in fall?
Garlic goes in Sep 29 to Oct 6. For fall harvests, sow peas and kale around Jul 14, lettuce around Jul 28, spinach around Aug 4 and radishes around Aug 18.