What to plant in July in USDA zone 10

Sow indoors in July — zone 10

Start these seeds under lights or in a heated propagator so transplants are ready when the outdoor planting window opens.

• Fall tomato seeds for September transplant

Harvest in July — zone 10

These crops should be ready or in active harvest in July for zone 10 gardens. Pick fruiting crops every 2-3 days to keep production going.

• Tropical herbs, okra, sweet potatoes, citrus

Maintenance in July — zone 10

• Shade, drip irrigation, summer-resistant ground cover

Prep and planning — zone 10

• Plan cool-season garden for October-March main growing season

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 10

Zone 10 has average annual minimum temperatures of 30 to 40°F (-1 to 4°C) and a frost-free window from frost rare or never to frost rare or never — about 365 growing days. Summer can be too hot for many tomato varieties. Winter is the prime growing season for cool-loving crops.

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 10. 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 10
• August in zone 10 →
• All zones — what to plant in July
• USDA Zone 10 — frost dates and crop list
• Full 12-month planting calendar

Other zones — July

• What to plant in July in zone 3
• What to plant in July in zone 4
• What to plant in July in zone 5
• What to plant in July in zone 6
• What to plant in July in zone 7
• What to plant in July in zone 8
• What to plant in July in zone 9