My Planting Calendar

What to plant in August in zone 10

USDA zone 10 has winter lows of 30 to 40°F, a typical last spring frost around Jan 30 and first fall frost around Dec 15, roughly 330 frost-free days. August is the "peak growing season" there.

3 crops have a sowing or planting window this month, including brussels sprouts, rutabaga.

Dates come from the typical frost dates of USDA zone 10 (last frost Jan 30, first frost Dec 15). A zone covers many climates, so for dates tuned to your town use the planting calendar, or pick your state below.

Peak growing seasonSow or plant: 3Start indoors: 0Harvesting: 0

Zone 10: planting activity through the year

77
69
27
9
9
4
3
3
18
30
26
54
JanFebMarAprMayJunJulAugSepOctNovDec
Frost riskFrost-free: Jan 30 – Dec 15
Bars count the vegetables, herbs and fruit with a sowing or planting window in each month, from the state’s average frost dates. 3 have one in August; the busiest month is January (77).

For fall and winter harvests (2)

Sowings counted back from zone 10's first fall frost, so the crop matures before the cold - or, for garlic and similar, planted after it.

CropWhat to doWindowThis month
Brussels SproutsStart transplants for fallAug 15 – Sep 1Opens Aug 15
RutabagaSow for a fall cropAug 29 – Sep 15Opens Aug 29

Peak growing season: August garden jobs in zone 10

  1. Water deeply two or three times a week rather than a little every day - about an inch a week, more in heat. See watering a vegetable garden.
  2. 17 weeks until the average first frost (December 15). Fall crops start now: brussels sprouts, rutabaga. See the fall and winter garden guide.
  3. Check the undersides of leaves twice a week - catching pests early is most of the battle (pest identification guide).
  4. Harvest often - picking regularly keeps beans, squash and cucumbers producing.

Questions gardeners ask

What can I plant in zone 10 in August?

3 crops have a window in August: brussels sprouts, rutabaga. The tables above give the exact dates for each.

When are the last and first frost in zone 10?

The typical last spring frost is around Jan 30 and the first fall frost around Dec 15. These are broad zone averages, so your own town can be a week or two either side: look yours up by ZIP code in the planting calendar.

August in states with land in zone 10

ArizonaCaliforniaFloridaNevadaTexas

Zone 10 in other months

JanuaryFebruaryMarchAprilMayJuneJulySeptemberOctoberNovemberDecemberZone 10 overview →

What to plant in August in other zones

Zone 3Zone 4Zone 5Zone 6Zone 7Zone 8Zone 9All states →

Dates are computed from the zone’s typical frost dates and each crop’s timing in our crop database. Your garden may be a week or two either side.