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What Grows in Seattle, WA?

Seattle's Pacific maritime climate is famous for cool-season crops — mild year-round but limited summer heat.

Zone

USDA 8b

Last frost

February 28

First frost

November 20

Frost-free days

220
Quick Answer

Seattle is in USDA Zone 8b with about 220 frost-free days, and you can grow broccoli, kale, lettuce, beans, and more here.

Planting tips for Seattle

Cool summers limit heat crops. Focus on cool-season vegetables. Tomatoes in warmest spots only.

What to plant, and when

Timing by your frost dates — last frost February 28, first frost November 20.

🌱 Start indoors (pre-frost)

Tomato, Cherry Tomato, Bell Pepper, Chili Pepper, Cucumber, Zucchini, Eggplant, Pumpkin

❄️ Direct-sow early (cool season)

Lettuce, Spinach, Kale, Broccoli, Carrot, Radish, Beets, Onion

☀️ Plant after last frost

Green Beans, Potato, Sweet Potato, Corn, Microgreens

🍂 Plant in fall

Garlic

What grows well in Seattle

USDA Zone 8b

Frequently asked questions

What hardiness zone is Seattle, WA in?

Seattle, WA is in USDA Hardiness Zone 8b. This drives everything about what you can reliably grow — it maps directly to how cold your winters get.

When is the last frost in Seattle?

The average last spring frost in Seattle is around February 28, and the first fall frost is typically November 20. Plan to move tender plants outside after February 28 and have them harvested (or protected) before November 20.

What grows well in Seattle?

Plenty — Seattle's USDA Zone 8b climate supports 30+ crops. Some of the easiest and most reliable here are Cherry Tomato, Chili Pepper, Cucumber.

How long is Seattle's growing season?

Seattle typically has around 220 frost-free days per year (roughly February 28 to November 20). That's a full season — plenty of time for most annual vegetables plus a succession or fall crop of cool-season greens.

What should I plant first in Seattle?

Go with fast-maturing crops to get a quick win while the season is short: Microgreens, Arugula, Radish are among the quickest from seed to harvest in Seattle.

Can I grow vegetables in containers in Seattle?

Yes — Seattle's climate is container-friendly for the right crops. Tomato, Cherry Tomato, Bell Pepper all do well in pots, which also lets you start them a little earlier and move them in on cold nights.

When should I start seeds indoors in Seattle?

For warm-season crops like Tomato, Cherry Tomato, Bell Pepper, start seeds indoors 6–8 weeks before your last frost (around February 28), then transplant after the danger of frost has passed.