Growli

July · USDA Zone 5

summer

What 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.

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.

Maintenance in July — zone 5

Universal July tasks

These apply across most US and UK gardens in July, regardless of zone.

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

Other zones — July