Best Vegetables to Grow in Washington

Peas are practically Washington's state vegetable in spirit — the cool, moist springs on both sides of the Cascades suit them perfectly. Direct sow as soon as soil reaches 40°F, which in western Washington can be late February or early March. Choose a shelling variety like 'Cascadia' snap pea and get seeds in the ground before soils warm past 70°F, which causes germination to stall.

Broccoli's long harvest window (60–90 days) fits neatly inside Washington's extended spring before temperatures climb. Start transplants indoors in late January and set out in March for a June harvest, or direct sow in July for a fall crop that sweetens after light frost. 'Belstar' and 'Green Magic' are reliable performers in the maritime climate's variable light.

Cabbage handles Washington's wet springs without the rot problems it develops in warmer, humid climates. It tolerates the region's frequent light frosts and can be transplanted out in March under a cloche. For fall crops, start seeds in mid-July — heads maturing in October and November develop excellent sweetness after they experience a few frosts.

Cauliflower is the most temperature-sensitive brassica, but Washington's naturally cool summers keep it from buttoning prematurely — a common problem in warmer climates. The key is steady, cool growth from transplant to harvest; avoid stressing plants with irregular watering. Blanch heads by tying outer leaves over the curd when they reach golf ball size to prevent yellowing in the region's variable sun.

Kale is exceptionally well adapted to Washington and can effectively be grown as a perennial in mild western Washington winters, producing harvests nearly year-round. 'Winterbor' and 'Red Russian' varieties withstand hard freezes and taste best after frost converts starches to sugars. Sow a second planting in August to ensure vigorous growth through the wet winter months.

Washington's cool, overcast springs are ideal for lettuce, preventing the bolting that plagues gardeners in sunnier climates. Direct sow or transplant as early as March under row cover, then sow successions every three weeks through May and again in August. Loose-leaf types like 'Black Seeded Simpson' and butterheads perform best in the low-light conditions common to Puget Sound gardens.

Spinach thrives in Washington's cool, moist conditions and can be sown in February under cover for harvests by April — weeks ahead of most U.S. gardens. It's one of the few crops that overwinters reliably west of the Cascades; sow in September and protect with a cold frame for a late winter harvest. 'Tyee' and 'Olympia' are bolt-resistant varieties suited to the region's variable day length.

Swiss chard bridges Washington's cool and warm seasons better than almost any other vegetable — frost-hardy in spring and fall, and tolerant of the moderate summer heat that does arrive. It performs double duty as a near year-round producer in western Washington, often surviving mild winters with minimal protection. Sow in April and harvest outer leaves continuously; plants regularly last 18 months before bolting.

Washington's deep, cool soils produce excellent carrots, especially in the Skagit and Willamette valleys. Sow from March through July for a continuous harvest; fall and overwintered carrots left in the ground develop exceptional sweetness as cold converts starches to sugars. Amend heavy clay soils common in western Washington with sand or compost to prevent forking — short Chantenay or Danvers types handle imperfect soil better than long Imperator varieties.

Beets grow steadily through Washington's cool springs and tolerate light frost at both ends of the season, making them a reliable two-season crop. Direct sow in March or April for summer harvest and again in late July for fall roots. Each 'seed' is actually a cluster of 2–3 seeds, so thin to 3-inch spacing early to avoid stunted roots — this single step has the biggest impact on beet yield in the home garden.

Radishes are the fastest payoff in a Washington spring garden, maturing in as few as 25 days when soil temperatures are in the 50–65°F range. Sow every two weeks from March through May and again in September for fall harvest; skip midsummer sowings when bolting is rapid. Use them as row markers between slower-germinating crops like carrots — by the time you pull the radishes, the carrots need the space.

Washington's long summer days — over 15 hours at the summer solstice — trigger bulbing in long-day onion varieties, which is exactly what the region requires. Start from transplants or sets in March to give bulbs the full growing season before days shorten in August. 'Walla Walla Sweet,' developed in eastern Washington, is the region's signature variety and performs exceptionally well across the state.

Garlic is planted in October in Washington and overwinters in the ground, producing scapes in June and cured bulbs by late July — a 9-month cycle that fits the region's rhythm perfectly. Hardneck varieties like 'Music' or 'Chesnok Red' suit western Washington's mild winters and outperform softneck types in cool, maritime conditions. Mulch with straw after planting to moderate soil temperature through the wet winter months.

June-bearing strawberries align perfectly with Washington's climate, producing their main crop as the weather transitions from cool spring to early summer — the sweetest conditions for berry development. 'Quinault,' 'Totem,' and 'Hood' are Pacific Northwest varieties bred for the region's specific day length and disease pressure. Plant bare-root crowns in March and remove the first season's flowers to build strong root systems for larger yields in year two.