July · USDA Zone 5
summerWhat to plant in July in USDA zone 5
Summer planting guide for zone 5 (Iowa, southern Wisconsin, northern Illinois, parts of New York) — a 150-day growing season with last frost around late April / early May and first frost around late September / early October.
Sow outdoors in July — zone 5
Direct-sow these seeds into prepared garden beds or large containers. Soil temperature matters more than the calendar date — wait for a sustained warm-up before sowing tender crops.
- Fall brassicas, kale, lettuce, spinach, radishes, beets, carrots
- Final bush bean succession (early July)
Harvest in July — zone 5
These crops should be ready or in active harvest in July for zone 5 gardens. Pick fruiting crops every 2-3 days to keep production going.
- Tomatoes (first), peppers, beans, squash, garlic, onions, blueberries
Maintenance in July — zone 5
- Prune indeterminate tomatoes, mulch deeply
Universal July tasks
These apply across most US and UK gardens in July, regardless of zone.
- Water deeply 1-2 times per week; let topsoil dry between waterings.
- Harvest summer squash, cucumbers, and beans every 2-3 days to keep production going.
- Side-dress tomatoes, peppers, and corn with compost or balanced fertilizer.
- Start fall brassica seeds indoors (broccoli, cabbage, cauliflower).
- Sow succession bush beans, lettuce (heat-tolerant), and basil.
- Watch for tomato hornworms, squash bugs, and cucumber beetles.
Why this works for zone 5
Zone 5 has average annual minimum temperatures of -20 to -10°F (-29 to -23°C) and a frost-free window from late April / early May to late September / early October — about 150 growing days. Classic Midwest growing zone. Most US gardening books default to zone 5 timing. Mulch garlic and perennials before deep winter freezes.
Dates are zone-wide averages. Local microclimates (south-facing slopes, urban heat, lakeside warmth, elevation) can shift the window by 1-2 weeks within the same zone.
UK gardeners — July
July is harvest peak for the UK. Pick salad, beans, courgettes, cucumbers, early potatoes, soft fruit, and summer raspberries. Sow spring cabbage, autumn salad, oriental greens, and Florence fennel. Plant out leeks and overwintering brassicas.
Source and methodology
Frost-date averages from NOAA Climate Data Online within USDA zone 5. Hardiness boundaries from the USDA Plant Hardiness Zone Map (2023). Crop timing curated against US Cooperative Extension Service publications (UNL, UMN, NC State, Texas A&M, UF/IFAS, Oregon State) and cross-referenced against the RHS sowing calendar. Curated by the Growli editorial team.
Keep going
- ← June in zone 5
- August in zone 5 →
- All zones — what to plant in July
- USDA Zone 5 — frost dates and crop list
- Full 12-month planting calendar