What to Plant in August in Zone 8

Here is what you can sow in August if you garden in USDA zone 8. Dates use typical zone 8 frosts, so your own microclimate may shift them by a week or two.

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CropWindowSow between
Cucumber, slicingMarketmore 76fallJul 15Aug 15
Cucumber, picklingExcelsiorfallJul 15Aug 15
Squash, summerZucchini DunjafallAug 1Aug 20
Bush BeanProviderfallAug 1Sep 3
Pole BeanKentucky WonderfallAug 1Aug 24
Snap PeaSugar SnapfallAug 23Aug 31
PotatoKennebecfallJul 28Aug 10
ParsleyItalian Flat-LeaffallAug 15Sep 30
KaleDazzling BluefallAug 15Sep 30
Swiss ChardBright LightsfallAug 15Sep 30
CollardsGeorgia SouthernfallAug 1Sep 30
Mustard GreensFlorida BroadleaffallAug 20Oct 1
CabbageTiarafallAug 1Sep 15
BroccoliBelstarfallAug 1Sep 10
CauliflowerSnow CrownfallAug 1Sep 5
KohlrabiWinnerfallAug 20Sep 20
CarrotNapolifallAug 20Sep 15
BeetDetroit Dark RedfallAug 20Sep 20
TurnipPurple TopfallAug 20Sep 25
Onion, bunchingEvergreenfallAug 20Sep 30
Lima Bean (Bush)HendersonfallAug 17Aug 24
English Shelling PeaLittle MarvelfallAug 23Aug 30
Brussels SproutsLong Island ImprovedfallAug 1Sep 16
Napa CabbageBlues F1fallAug 7Sep 16
Bok ChoyJoi Choi F1fallAug 27Oct 6
Rapini (Broccoli Raab)Zamboni F1fallAug 22Oct 1
Gai Lan (Chinese Broccoli)Crispy BluefallAug 17Sep 26
TatsoiTatsoifallAug 22Oct 6
MizunaMizuna EarlyfallAug 27Oct 11
Daikon RadishMiyashigefallAug 27Oct 6
EndiveFrisée Fine MaraîchèrefallAug 22Sep 26
EscaroleBatavian Full HeartfallAug 22Sep 26
RadicchioPalla Rossa MavrikfallAug 12Sep 21
CeleryTangofallAug 7Sep 6
ParsnipHollow CrownfallAug 2Sep 6
LeekLincolnfallAug 2Sep 20
SalsifyMammoth Sandwich IslandfallJul 26Sep 6
CeleriacPrinzfallAug 9Sep 13
RutabagaLaurentianfallAug 2Sep 13
Fennel, FlorenceOrionfallAug 16Sep 20
CucumberfallJul 15Aug 15
BeanfallAug 1Sep 3

Zone 8 in August

A Second Summer Crop

Cucumbers and Squash Come Back

The table rebounds from single digits to more than 40 crops this month, and the headline isn't the fall greens, it's that cucumbers and summer squash get planted again, a genuine second run of the same warm-season crops that finished back in June. With your first frost typically not landing until mid-November, that leaves 14 to 15 weeks, more than enough for a 50 to 65 day cucumber to mature with room to spare.

That second run is only possible because of how late frost arrives here; a shorter season elsewhere would close this door before a fall cucumber crop could realistically finish.

Snap pea sown this month needs support in place before the vines take off. A trellis added after the fact damages roots that have already spread, while one set at planting time costs nothing extra.

Fall Brassicas Need a Transplant, Not a Seed

Cabbage, broccoli, cauliflower, and brussels sprouts all reopen this month too, but they need to go in as transplants rather than direct-sown seed. Brussels sprouts alone can take 90 to 100 days to mature, and counting back from mid-November leaves little slack for a seed to germinate first.

Start those transplants in a shaded spot or under 30 to 50 percent shade cloth; seedlings sown directly into soil still carrying summer's heat germinate unevenly, if they germinate at all.

Lima beans planted now are a genuine gamble against the calendar, needing 65 to 75 days that leave little room for delay. A bush variety is the safer bet over a pole type, which typically needs several weeks longer to start producing.

English shelling peas share snap peas' need for cooling weather to set pods well. Expect the best production once nights settle into the 50s in a few weeks, not from the first flush of blossoms in the heat still lingering now.

August in zone 8: common questions

What can I plant in August in zone 8?+

In August, USDA zone 8 gardeners can sow Cucumber, slicing, Cucumber, pickling, Squash, summer, Bush Bean, Pole Bean, Snap Pea, and more. Dates use typical zone 8 frosts, so your own microclimate may shift them by a week or two.

What USDA hardiness zone am I in?+

Zone 8 is one band of the map, but planting time is set by your local frost dates, not the zone number. Enter your ZIP code in the free planner and it uses your actual frost dates, which can differ by weeks within a single zone.

Are these August planting dates exact?+

They are typical zone 8 windows. Two gardens in the same zone can be a week or two apart because of elevation and local climate, so treat these as a starting point and tune them to your ZIP code with the free planner.