When to Plant Peas in Ontario — 2026 Guide
Direct sow dates for every major Ontario city, the differences between sugar snap, snow, and shelling peas, fall sowing for a second crop, and how to get the most from Ontario's narrow pea window before summer heat shuts them down.
When to plant peas in Ontario is one of the first gardening questions of the year — peas go in the ground as soon as soil is workable in late March or early April, weeks before last frost. They are one of the few vegetables that thrive in cold Ontario springs and are actually harmed by waiting. A pea sown in late March and one sown in mid-May will produce at almost the same time because the late sowing rushes to set seed before heat arrives — but the early sowing produces far more pods before shutting down.
This guide covers direct sow dates for every major Ontario city, the three types of peas and when to harvest each, fall sowing for a second September crop, and the best varieties for Ontario's range of climates from Windsor's long season to Ottawa's shorter one.
Ontario peas at a glance: Direct sow as soon as soil is workable — soil above 4°C. Toronto/Windsor: late March–early April. Ottawa/Kingston: early–mid April. Never transplant — direct sow only. Harvest: June–early July. Fall crop: sow early–mid August for September harvest. Peas stop producing above 24°C — plant early.
Ontario Pea Planting Calendar — Spring 2026
Plant as early as possible. Peas germinate in soil as cool as 4°C and tolerate frost to -4°C on established plants. Every week of delay shortens the harvest window before summer heat arrives.
| City | Zone | First Sowing | Last Spring Sowing | Spring Harvest | Season Ends |
|---|---|---|---|---|---|
| Windsor | 7a | Mar 20–Apr 1 | May 1 | Jun–early Jul | When >24°C |
| Toronto | 6b | Mar 25–Apr 5 | May 1 | Jun–early Jul | When >24°C |
| Hamilton | 6b/7a | Mar 25–Apr 5 | May 1 | Jun–early Jul | When >24°C |
| London | 6a | Apr 1–10 | May 1 | Jun–early Jul | When >24°C |
| Kingston | 5b | Apr 5–15 | May 5 | Jun–Jul | When >24°C |
| Ottawa | 5a | Apr 5–15 | May 5 | Jun–Jul | When >24°C |
Ontario Pea Planting Calendar — Fall 2026
Fall peas are underused in Ontario. Sow 8–10 weeks before first fall frost. As temperatures cool in September, plants revive and produce sweet pods. The challenge is germinating in August heat — keep soil moist until seedlings emerge.
| City | First Fall Frost | Fall Sowing Window | Fall Harvest | Best Variety |
|---|---|---|---|---|
| Windsor | Oct 28 | Aug 10–25 | Oct–Nov | Sugar Ann, Wando |
| Toronto | Nov 1 | Aug 10–25 | Oct | Sugar Ann, Maestro |
| Hamilton | Oct 28 | Aug 10–25 | Oct | Sugar Ann, Wando |
| Kingston | Oct 15 | Aug 1–15 | Sept–Oct | Sugar Ann (fastest) |
| Ottawa | Oct 12 | Aug 1–15 | Sept–Oct | Sugar Ann (fastest) |
Three Types of Peas — Which to Grow in Ontario
The type of pea changes what you harvest, when you harvest it, and how you use it. All three types grow on the same timeline in Ontario — the difference is in the pod and seed.
🌿 Sugar Snap
Thick, sweet, crunchy pods eaten whole. Pick when pods are round and fully filled but still bright green. The most popular Ontario pea — eat fresh off the vine. Needs support unless you choose bush varieties.
Best: Sugar Ann (bush, 52d), Super Sugar Snap (climbing, 65d)
❄️ Snow Pea
Flat, tender pods eaten whole before seeds develop. Pick when pods are 6–8 cm long and flat. Sweet and crisp. Used in stir-fries. Faster to harvest than snap peas — less waiting. Semi-climbing types need light support.
Best: Oregon Sugar Pod (60d), Mammoth Melting Sugar (72d)
🥔 Shelling Pea
Tough pods — seeds shelled out and eaten fresh or frozen. More work to harvest but higher volume. Best for freezing in bulk. Eat fresh immediately for the sweetest flavour — sugar converts to starch within hours of harvest.
Best: Lincoln (65d), Maestro (61d), Wando (68d, heat-tolerant)
Bush vs Climbing Peas for Ontario Gardens
The second key decision after variety type is plant habit — bush vs climbing affects whether you need a trellis and how much space you need.
🌿 Bush Peas
- Grow 45–60 cm tall — no support needed
- Slightly earlier maturity (50–60 days)
- Less productive per plant than climbing types
- Better for containers and small raised beds
- Good for succession sowing in small spaces
Best: Sugar Ann, Maestro, Little Marvel
🌿 Climbing Peas
- Grow 1.2–2.0 m tall — need trellis or netting
- Slightly later maturity (60–75 days)
- Much more productive per plant
- Better use of vertical space in Ontario gardens
- Easier to harvest — pods hang at accessible heights
Best: Sugar Snap, Super Sugar Snap, Lincoln, Oregon Sugar Pod
Best Pea Varieties for Ontario
Days to maturity and heat tolerance are the key specs for Ontario. Ottawa and Kingston gardeners should prioritise faster varieties. Windsor and Toronto can grow longer-season climbing types.
Fastest sugar snap. No trellis needed. Best for Ottawa and Kingston where the window is shorter. Excellent for containers. Very sweet crisp pods.
Improved disease resistance over original Sugar Snap. Very productive, excellent flavour. Needs 1.5m trellis. Best for Toronto and Windsor where the longer season allows this variety to peak.
Shelling pea, disease-resistant, high-yielding. Bush type — no support. Good all-round Ontario shelling pea across all zones. Very reliable in Ontario's variable spring weather.
Most heat-tolerant pea variety. Extends the Ontario harvest window by 1–2 weeks when other varieties have shut down. Excellent for late spring sowings in Toronto and Windsor. Shelling type.
Best snow pea for Ontario. Very productive, pods large and sweet. Needs light support (90cm). Excellent for fresh eating and stir-fries. Works across all Ontario zones.
Best-flavoured shelling pea. Classic heirloom, rich sweet taste fresh or frozen. Needs light support. Good for Toronto and Windsor where the longer season suits this slightly slower variety.
Ontario Pea Growing Tips
Plant as early as possible — every week counts
The single most important pea tip for Ontario: plant early. Peas tolerate frost and cold soil. A plant sown in late March has 6–8 more weeks of cool productive weather than one sown in mid-May. Both plants will stop producing when July heat arrives — but the early one has been picking for 6 weeks while the late one is just starting. Peas sown after May 1 in Ontario often barely produce before heat ends the season. Aim for the earliest possible sowing date in your city.
Never start peas indoors — direct sow only
Peas develop a deep taproot very quickly after germination. Transplanting disrupts this root system and causes significant setback. Since peas tolerate cold soil and frost, there is no benefit to starting them indoors — direct sowing in cold soil in late March is fine and actually better than transplanting indoor-started seedlings in May. Sow 2.5 cm deep, 5–8 cm apart, in double rows with 15–20 cm between rows.
Provide support early — peas climb from the start
Install your trellis or netting before or at sowing time, not after seedlings appear. Climbing peas send out tendrils from the first few sets of leaves and immediately grab whatever is available. A trellis of garden netting, chicken wire, or string attached to posts works well. For bush peas, twiggy branches pushed into the soil beside rows give enough support to keep plants upright in Ontario's spring rain and wind. Unsupported climbing peas tangle into a mat, reducing air circulation and making harvest very difficult.
Harvest frequently — picking extends production
Like beans, peas stop producing when pods are left to mature on the vine. Pick sugar snap and snow peas every 2 days at peak season. Shelling peas should be picked when pods are plump and fully rounded but before they become starchy — check by opening a pod and tasting. Frequent harvesting signals the plant to keep producing. Leaving overmature pods on the vine is the most common reason Ontario pea yields disappoint.
Eat shelling peas immediately — sweetness fades fast
Fresh shelling peas are one of the most perishable vegetables in the garden. The natural sugars begin converting to starch within hours of harvest at room temperature. Pick in the morning when cool, refrigerate immediately, and eat or freeze within a few hours for maximum sweetness. This is why shop-bought peas are always less sweet than garden peas — by the time they reach the store, most of the sugar is gone. Growing your own shelling peas specifically so you can eat them within hours of picking is one of the most worthwhile things any Ontario gardener can do.
How Ontario Compares — BC and Quebec
Coastal BC has a significant pea advantage — cooler summers mean a much longer productive window.
| City | First Sowing | July High | Harvest Window | Notes |
|---|---|---|---|---|
| Victoria, BC | Late Feb | 22°C | May–Aug | Best pea climate in Canada |
| Vancouver, BC | Late Feb–Mar | 22°C | May–Aug | Long season — rarely exceeds 24°C |
| Windsor, ON | Late Mar | 28°C | Jun–early Jul | Shortest Ontario window — plant early |
| Toronto, ON | Late Mar–Apr | 27°C | Jun–early Jul | 4–5 week harvest window |
| Ottawa, ON | Early–mid Apr | 26°C | Jun–Jul | Slightly longer than Toronto |
| Montreal, QC | Early–mid Apr | 27°C | Jun–Jul | Same as Ottawa — identical timing |
Frequently Asked Questions
When should I plant peas in Ontario?
As early as possible — as soon as soil is workable and above 4°C. Toronto and Windsor: late March to early April. Ottawa and Kingston: early to mid-April. Never wait for last frost — peas tolerate hard frost. Every week of delay shortens your harvest window before summer heat arrives. Use the frost calculator for your city's dates.
Why did my Ontario peas stop producing?
Heat. Peas stop flowering and pod production when temperatures consistently exceed 24°C. In Ontario this happens by late June in Toronto and Windsor, and early to mid-July in Ottawa. This is biological — there's nothing wrong with your plants. The solution is planting early enough to complete most of the harvest before heat arrives. You can also try a fall sowing (August) for a September harvest when temperatures cool again.
Do peas need a trellis in Ontario?
Climbing varieties do — they reach 1.2–2.0 m and need support. Bush varieties (Sugar Ann, Maestro, Little Marvel) reach 45–60 cm and don't need a formal trellis, though twiggy branches push into the soil beside rows help keep them upright in spring rain. Install support at sowing time — peas climb from the first leaves and will find your trellis immediately.
Can I grow peas in a container in Ontario?
Yes — bush varieties like Sugar Ann (52 days) work well in containers at least 30 cm deep and 30 cm wide. Use a trellis or netting even for bush types in containers — they appreciate support. Container peas dry out faster than in-ground peas and need daily watering during warm weather. Place containers in full sun during spring and partial shade in June to slow bolting. Container peas on a cool north-facing balcony often outlast south-facing in-ground peas by 1–2 weeks.
📖 Related Guides
More planting guides for Ontario vegetable gardeners.