June · USDA Zone 10
summerWhat to plant in June in USDA zone 10
Summer planting guide for zone 10 (South Florida, Coastal Southern California, Hawaii (parts)) — a 365-day growing season with last frost around frost rare or never and first frost around frost rare or never.
Sow outdoors in June — zone 10
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.
- Tropical greens (Malabar spinach, kang kong), okra, sweet potatoes
Harvest in June — zone 10
These crops should be ready or in active harvest in June for zone 10 gardens. Pick fruiting crops every 2-3 days to keep production going.
- Tomatoes (winding down), tropical fruit, citrus, herbs
Maintenance in June — zone 10
- Shade cloth, mulch, irrigation — many cool-loving crops are dormant now
Prep and planning — zone 10
- Plan winter (cool-season) garden for October sowing
Universal June tasks
These apply across most US and UK gardens in June, regardless of zone.
- Mulch all warm-season beds — straw, shredded leaves, or grass clippings.
- Water deeply once or twice a week instead of light daily sprinkles.
- Stake, prune, and tie up tomatoes; remove suckers on indeterminate varieties.
- Start succession sowing — bush beans, lettuce, radishes every 2-3 weeks.
- Watch for pests: aphids, flea beetles, squash bugs, cabbage moths.
- Harvest garlic scapes (hardneck varieties) in zones 5-8.
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 — June
June is the UK's sowing-and-harvesting overlap. Direct-sow French beans, runner beans, courgettes, sweetcorn, salad leaves, carrots, and beetroot. Harvest strawberries, broad beans, peas, early potatoes, and salad. Plant out leeks and 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
- ← May in zone 10
- July in zone 10 →
- All zones — what to plant in June
- USDA Zone 10 — frost dates and crop list
- Full 12-month planting calendar