What should I plant in August in Portland, OR?

In August in Portland, OR (zone 8b), you can plant Cilantro, Parsley, Beet, Broccoli, Brussels Sprouts, and more. These dates are based on local climate data for your area.

When do I plant Cilantro in Portland, OR?

In Portland, OR (zone 8b), Cilantro: direct sow Feb 15 – Jul 23 and Aug 17 – Sep 30.

When do I plant Parsley in Portland, OR?

In Portland, OR (zone 8b), Parsley: start seeds indoors Jan 1 – Jun 30 and Dec 9 – Dec 31, transplant outdoors Feb 15 – Sep 8.

When do I plant Beet in Portland, OR?

In Portland, OR (zone 8b), Beet: direct sow Feb 15 – Sep 15.

What to Plant in August

Portland, OR · Zone 8b

Last frost: Mar 15 Frost-free days: 245

Full year calendar for Portland

Late summer is prime time for starting your fall garden. Sow cool-season crops indoors or direct sow fast-maturing varieties. The heat will ease soon.

August at a Glance

Indoor Transplant Direct Sow

1 5 10 15 20 25

Cilantro

Parsley

Beet

Broccoli

Brussels Sprouts

Cabbage

Carrot

Cauliflower

Garlic

Kale

Leek

Lettuce

Onion

Peas

Radish

Spinach

Swiss Chard

Turnip

Start Indoors 3

Start these seeds indoors under grow lights or on a sunny windowsill.

Swiss Chard

Jan 17 – Aug 16

4 per sq ft 50–60 days

Lettuce

Jul 17 – Aug 23

4 per sq ft 45–60 days

Spinach

Aug 9 – Sep 23

9 per sq ft 35–50 days

Transplant 10

Move these seedlings from indoors to your garden beds.

Plant now

Parsley

Feb 15 – Sep 8

4 per sq ft 70–90 days

Swiss Chard

Feb 15 – Sep 15

4 per sq ft 50–60 days

Kale

Feb 22 – Sep 8

1 per sq ft 50–65 days

Leek

Feb 22 – Aug 8

4 per sq ft 90–150 days

Onion

Feb 22 – Aug 16

9 per sq ft 100–120 days

Broccoli

Mar 1 – Aug 23

1 per sq ft 60–100 days

Brussels Sprouts

Mar 1 – Aug 8

1 per sq ft 80–110 days

Cabbage

Mar 1 – Aug 23

1 per sq ft 70–100 days

Cauliflower

Mar 1 – Aug 23

1 per sq ft 55–100 days

Later this month

Lettuce

Aug 17 – Sep 23

4 per sq ft 45–60 days

Direct Sow 7

Plant these seeds directly into the soil outdoors.

Plant now

Garlic

Jan 1 – Aug 23

9 per sq ft 180–240 days

Beet

Feb 15 – Sep 15

9 per sq ft 50–70 days

Turnip

Feb 15 – Oct 8

9 per sq ft 30–60 days

Carrot

Mar 9 – Aug 16

16 per sq ft 70–80 days

Later this month

Cilantro

Aug 17 – Sep 30

9 per sq ft 30–45 days

Peas

Aug 17 – Sep 8

8 per sq ft 55–70 days

Radish

Aug 17 – Oct 8

16 per sq ft 22–30 days

August Gardening Tips

Start Lettuce, Spinach, Swiss Chard indoors now to give them a head start before transplanting outside.
Lettuce, Broccoli, Cabbage can be transplanted outside this month. Harden off seedlings over 5–7 days before planting out.
Direct sow Carrot, Peas, Garlic straight into the garden — no transplanting needed.
Count backwards from your first frost date to determine the last safe date for starting fall crops.

Nearby Cities

Seattle WA · Zone 8b Boise ID · Zone 6b Sacramento CA · Zone 9b San Francisco CA · Zone 10a San Jose CA · Zone 9b Fresno CA · Zone 9a

Related Guides

Spacing Chart

How many plants per square foot

4×8 Raised Bed Layout

Planting plans for a standard bed

Planting Calendar

When to plant for your zone

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