What to Plant in August in Zone 9

6 crops you can start in zone 9a & 9b during August. The dates are worked out from zone 9's typical frosts: last spring frost around Feb 15, first fall frost around Dec 5. Each crop links to its full dates for zone 9.

Start indoors in August

Seeds to start under lights or on a sunny sill this month. Dates are the indoor-start window for zone 9.

Vegetables & herbs

Flowers

Sow or plant outside in August

What goes in the ground this month, either as seed or as a transplant. Dates are the planting-out window for zone 9.

← July in zone 9 · September in zone 9 →

Keep planning

Growing guides

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Plan your bed

Not sure of your zone? Look it up by ZIP code.

August in other zones: zone 5, zone 6, zone 7, zone 8, zone 10, zone 11

Worth having in August

Rachio Smart Hose TimerWaters on a schedule and skips rainy days.Check price on Amazon →Rocky Mountain Goods Flat Soaker HoseSeeps water along a whole row, with no drip emitters to clog.Check price on Amazon →AC Infinity Humidity Dome, Heavy-Duty Germination KitKeeps a freshly sown tray moist until the seeds are up.Check price on Amazon →

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What to plant in August in zone 9: broccoli, cabbage, cauliflower, Brussels sprouts and more

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What to plant in August in zone 9: 6 crops to start indoors or plant outside, including broccoli, cabbage, cauliflower, Brussels sprouts, with exact dates for zone 9a and 9b.

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