What to Plant in July in Canada: Zone-by-Zone Guide

July might feel like mid-summer, but for Canadian gardeners it's one of the best months to start planning your fall harvest. While much of your spring planting is already in the ground, July opens a critical window for succession planting, quick-maturing crops, and fall garden setup.

This guide covers what to plant in July across Canadian hardiness zones 3 through 8.

Why July Planting Matters

In most of Canada, July sits 60–90 days before the first fall frost — which is exactly the right timing for many cool-season vegetables. Crops that struggle in June's heat often thrive when started in July and harvested in the cool of September and October.

Key July planting logic:

• Work backwards from your first frost date
• Cool-season crops need 45–75 days to mature
• Plan for shorter day length and dropping temperatures through September

Use the MyGardenPlanner.ca frost date calculator to find your exact first frost date by city.

What to Plant in July by Zone

Zone 3 (Manitoba, Northern Ontario, Northern Saskatchewan)

First frost: mid-August to early September

With only 6–8 weeks left in the season by mid-July, zone 3 gardeners should focus on the fastest-maturing crops:

• Radishes (25–30 days): Direct sow now for an August harvest
• Spinach (40–50 days): Start now to beat the first frost
• Lettuce (45–55 days): Loose-leaf varieties only — plant by July 10
• Turnips (45–60 days): Direct sow by July 1 for a September harvest
• Kale (55–60 days): Hardy past frost, can be seeded in early July

Zone 4 (Southern Manitoba, Northern Alberta, Prairies)

First frost: mid-September

• Bush beans (50–60 days): Final succession planting by July 15
• Beets (50–70 days): Excellent fall crop, direct sow now
• Broccoli (60–70 days): Start indoors in late June, transplant in mid-July
• Spinach and lettuce: Direct sow throughout July
• Carrots (70–80 days): Short-season varieties only — 'Napoli' or 'Mokum' by July 1

Zone 5 (Southern Ontario, Southern Quebec, Southern Alberta)

First frost: late September to early October

Zone 5 gardeners have the best July planting window in Canada. You can still get full harvests of:

• Broccoli and cauliflower (60–80 days): Transplant starts by July 15 for October harvest
• Cabbage (70–85 days): Plant by July 10
• Bush beans (50–60 days): Succession plant every 2 weeks through July
• Beets and carrots (55–75 days): Direct sow throughout July
• Leeks: If started in April, now's the time to hill up for fall harvest
• Arugula (40 days): Direct sow through August for fall greens

Zone 6 (Southern BC, Niagara, Hamilton, Kelowna)

First frost: mid to late October

• Arugula (40 days): Direct sow through August
• Spinach (40–50 days): Plant now for fall and early winter harvest
• Kale (55–60 days): Can direct sow now for October/November harvest
• Swiss chard (55–65 days): Excellent fall crop
• Pak choi / bok choy (45–55 days): Bolt-resistant in cooler fall temps
• Second planting of cucumbers (50–60 days): Zone 6 has enough season for a late batch

Zone 7 and 8 (Metro Vancouver, Victoria, Okanagan valley floor)

First frost: November to December (or frost-free in mild years)

• Winter squash (80–100 days): Transplant starts by early July for fall harvest
• All cool-season crops: Can be seeded in late July and even August
• Overwintering crops: Start kale, spinach, and Asian greens now for winter harvest
• Corn (70–90 days): Final planting window in zone 8 — by July 10

Succession Planting Tips for July

Succession planting in July maximizes your harvest window. The goal is to plant a new batch every 2–3 weeks so you're not overwhelmed in August and empty-handed in October.

Key succession crops for July:

1. Bush beans — plant every 2 weeks through July 15 (zones 4–6)
2. Lettuce — plant weekly through August in zones 5–8
3. Radishes — plant every 10 days; ready in just 25 days
4. Spinach — plant every 3 weeks through August in zones 5–8

Use the succession planting calculator at MyGardenPlanner.ca to generate a customized schedule based on your zone and crops.

Starting Fall Brassicas Indoors in July

Broccoli, cauliflower, and cabbage all benefit from being started indoors in late June through mid-July, then transplanted as 4–6 week-old seedlings:

1. Start seeds in trays indoors: last week of June through July 15
2. Grow under lights or in a bright window — brassica seedlings need 14+ hours of light
3. Harden off seedlings over 7–10 days before transplanting
4. Transplant 4–6 week seedlings in mid-to-late July
5. Mulch around transplants to retain soil moisture during summer heat
6. Water daily for the first week to reduce transplant shock

In zones 3–4, timing is critical — transplant by July 10–15 to give brassicas enough time before frost.

What NOT to Plant in July

Some crops simply won't mature from seed in July in most Canadian zones:

• Tomatoes, peppers, eggplant: Need 10–12 weeks from seed — missed the window (unless you're in zone 8 with purchased transplants)
• Winter squash in zone 3: Not enough season left by mid-July
• Sweet corn in zone 4: Too late by July 15 for most varieties
• Pumpkins in zones 3–5: Need 90–110 days — July is too late

Quick Reference: July Planting Chart

Plan Your Fall Garden with MyGardenPlanner

Getting the timing right for July planting is the difference between a productive fall garden and an empty one by September. MyGardenPlanner.ca helps Canadian gardeners plan succession planting schedules, track frost dates by city, and set up a full season calendar from spring seeding through fall harvest.

Start your free planting calendar at mygardenplanner.ca/calculator — enter your location, select your crops, and get exact planting and harvest dates for your zone.