Washington is one of the premier garlic-growing states in the Pacific Northwest — and one of the most climatically diverse in the country. Spanning USDA zones 4a through 9b, Washington ranges from the cold, wet Olympic Peninsula and the fertile Puget Sound lowlands to the sunny, arid Columbia Basin and the rugged Cascades. The state's eastern half — with its volcanic soils, cold winters, low humidity, and intense sunshine — is some of the finest hardneck garlic-growing country in the nation. The Skagit Valley north of Seattle is legendary for allium production. Washington grows garlic exceptionally well across nearly every region.
Washington's Garlic Growing Zones
- Puget Sound Lowlands / Western Washington (Seattle, Tacoma, Olympia, Bellingham): Zones 7b–9a. Mild, wet winters and long growing seasons — excellent softneck and hardneck growing conditions. Drainage is the key challenge west of the Cascades. The Skagit Valley north of Seattle is one of the most productive allium-growing regions in the country.
- Olympic Peninsula (Port Angeles, Sequim, Port Townsend): Zones 7a–8b. Mild maritime winters — Sequim's unique rain shadow creates surprisingly dry conditions ideal for garlic. One of Washington's hidden garlic gems.
- Columbia Basin / Eastern Washington (Yakima, Kennewick, Pasco, Richland, Walla Walla): Zones 6a–7b. Cold winters, low humidity, intense sunshine, and the famous volcanic soils of the Columbia Basin — outstanding hardneck territory. Walla Walla's rich agricultural soils are exceptional for garlic.
- Spokane / Inland Empire (Spokane, Pullman, Colfax): Zones 5b–6b. Cold winters with low humidity and the fertile Palouse soils — excellent hardneck growing conditions. The Palouse region's deep, rich soils are among the most productive agricultural soils in the world.
- North Cascades / Wenatchee Valley (Wenatchee, Chelan, Leavenworth): Zones 5b–7a. Cold winters with low humidity and intense sunshine — outstanding hardneck territory with the fertile volcanic soils of the Wenatchee Valley.
- Northeast Washington / Okanogan Highlands (Okanogan, Omak, Colville, Republic): Zones 4a–5b. Cold winters with low humidity — cold-hardy hardneck varieties are essential in this demanding but rewarding growing region.
When to Plant Garlic in Washington
- Northeast Washington / Okanogan Highlands (zones 4a–5b): September 15–October 5 — plant before hard mountain freezes
- Spokane / Inland Empire (zones 5b–6b): September 20–October 15
- North Cascades / Wenatchee Valley (zones 5b–7a): October 1–25
- Columbia Basin / Eastern Washington (zones 6a–7b): October 1–November 1
- Olympic Peninsula (zones 7a–8b): October 10–November 10
- Puget Sound / Western Washington (zones 7b–9a): October 10–November 15
Plant when soil temperatures drop to 50–60°F — about 4–6 weeks before your first hard freeze. In northeast Washington and the Okanogan Highlands, that means mid-September. In Spokane and the Palouse, aim for late September to mid-October. In the Columbia Basin and Wenatchee Valley, early-to-mid October. In western Washington and the Puget Sound, you have until mid-November. Washington's wet fall weather west of the Cascades can make timing tricky — plant in a well-drained bed and don't let waterlogged soil delay you past your window.
The Best Garlic for Washington
Washington's climate diversity means variety selection varies significantly by region. Eastern Washington is outstanding hardneck country. Western Washington and the Puget Sound support both hardnecks and softnecks. The Skagit Valley is particularly well-suited to softneck production.
Hardneck Varieties — Outstanding Across Washington
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Music — Porcelain hardneck, zones 3–8, large beautiful bulbs with bright white wrappers and a bold, rich flavor.
🏆 Best for: beginner gardeners, high yields, reliable production — an excellent performer across Washington's diverse growing regions -
Chesnok Red — Purple Stripe hardneck, zones 3–8, our best-producing hardneck year after year. Exceptional roasting qualities and sweet, complex flavor.
🏆 Best for: roasting, cooking, Puget Sound and Columbia Basin gardens — thrives in Washington's growing conditions -
German Red — Rocambole hardneck, zones 3–8, widely regarded as one of the best-tasting hardneck varieties available. Rich, complex, and deeply savory.
🏆 Best for: experienced cooks, Skagit Valley and western Washington gardens — exceptional flavor in the maritime climate -
Russian Red — Marbled Purple Stripe hardneck, zones 3–8, rich and full-flavored with beautiful deep purple marbling.
🏆 Best for: cold winters, bold raw flavor, northeast Washington, Spokane, and Okanogan Highlands gardeners -
Persian Star — Purple Stripe hardneck, zones 3–8, stunning purple-striped wrappers and rich, complex flavor.
🏆 Best for: unique flavor profiles, Columbia Basin and Wenatchee Valley gardens -
Korean Red — Asiatic hardneck, zones 3–8, very hot and intensely spicy with a bold punch that mellows beautifully when cooked.
🏆 Best for: heat lovers, northeast Washington and Okanogan Highlands gardeners, cold mountain winters -
Italian Red — Porcelain hardneck, extremely cold hardy with bold hot flavor.
🏆 Best for: Washington's coldest zones, maximum cold hardiness, Okanogan Highlands and northeast Washington
Softneck Varieties — Best for Western Washington and the Skagit Valley
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Inchelium Red — Artichoke softneck, zones 5–10, taste-test champion with very large bulbs. Named after Inchelium, Washington — this variety has deep roots in the Pacific Northwest.
🏆 Best for: long storage, beginner gardeners, mild flavor, Puget Sound and Skagit Valley gardens — a true Washington native -
Messedor — French white artichoke softneck, mild and balanced flavor, large uniform bulbs.
🏆 Best for: long storage, braiding, mild flavor, Seattle and western Washington gardens -
Castano — Artichoke softneck, rich and savory flavor, reliable producer.
🏆 Best for: reliable production, savory cooking, Puget Sound and Skagit Valley gardens
How to Plant Garlic in Washington
- Prepare your bed: Washington soils vary dramatically by region — from the rich, volcanic Palouse soils of eastern Washington (some of the most productive agricultural soils in the world) to the clay-heavy soils of western Washington and the fertile alluvial soils of the Skagit and Walla Walla valleys. All beds benefit from compost additions. Eastern Washington soils are naturally excellent for garlic. Western Washington soils need extra drainage — raised beds are strongly recommended west of the Cascades.
- Break your bulbs: Separate cloves just before planting. The largest cloves produce the largest bulbs.
- Plant depth and spacing: 2–3 inches deep in western Washington and the Puget Sound, 3–4 inches deep in eastern Washington's colder zones, pointed end up, 6 inches apart in rows 12 inches apart.
- Mulch well: Apply 3–4 inches of straw mulch immediately after planting. In northeast Washington and the Okanogan Highlands, 5–6 inches is recommended. In western Washington, mulch helps manage wet winters and prevents soil compaction from heavy rainfall.
- Spring care: Remove mulch gradually as temperatures warm. Apply a nitrogen-rich fertilizer when you see green growth. Stop fertilizing by late May to shift energy to bulb development. Washington's wet springs can encourage lush foliage — stop nitrogen by late May regardless of how green your plants look.
Common Garlic Mistakes in Washington
- Poor drainage west of the Cascades: Washington's wet winters are the biggest challenge for garlic in western Washington. Garlic will rot in waterlogged soil. Raised beds, well-amended soil, and good drainage are essential in the Puget Sound region.
- Planting too late in northeast Washington: Okanogan Highlands and northeast Washington gardeners must plant by early-to-mid October at the latest. Hard freezes come early in the mountains.
- Over-fertilizing in spring: Washington's maritime climate produces lush spring growth west of the Cascades. Stop nitrogen fertilization by late May — too much nitrogen late in the season produces large tops but small bulbs.
- Skipping Inchelium Red in western Washington: Inchelium Red was developed in Washington state — it's perfectly adapted to the Puget Sound climate and is one of the best softneck varieties you can grow in western Washington.
When to Harvest Garlic in Washington
- Northeast Washington / Okanogan Highlands (zones 4a–5b): Mid-July to early August
- Spokane / Inland Empire (zones 5b–6b): Early to mid-July
- North Cascades / Wenatchee Valley (zones 5b–7a): Early to mid-July
- Columbia Basin / Eastern Washington (zones 6a–7b): Late June to mid-July
- Olympic Peninsula (zones 7a–8b): Late June to mid-July
- Puget Sound / Western Washington (zones 7b–9a): Late June to mid-July
Harvest when about half the leaves have browned and half are still green. Washington's transition from wet spring to dry summer can be abrupt — once the rains stop and heat arrives, garlic matures quickly. Check your crop regularly once browning begins in late June.
💡 Pro tip: Always dig a test bulb first! Before pulling your entire crop, dig one bulb and inspect it. The cloves should be plump and well-formed, filling out the wrapper. If they look small or the skin is very tight, give it another week.
Curing and Storing Washington Garlic
Washington's dry summers east of the Cascades make it excellent for curing garlic outdoors in the shade. In western Washington and the Puget Sound, cure garlic in a well-ventilated indoor space to avoid late-summer humidity. A barn, garage, or covered porch works well. The Columbia Basin and Wenatchee Valley's dry summer air cures garlic beautifully. Cure for 3–4 weeks before trimming and storing. Hardneck varieties store 4–6 months; softneck varieties store 9–12 months.
Ready to Grow Washington Garlic?
Our seed garlic begins shipping in September — perfectly timed for Washington's fall planting window. Whether you're gardening in the Skagit Valley, the Columbia Basin, the Palouse, or the Okanogan Highlands, we have the right variety for your zone. Varieties sell out early, so order when you're ready.
- Shop Hardneck Seed Garlic → — Music, Chesnok Red, German Red, Russian Red, Persian Star, Korean Red, and Italian Red — outstanding across Washington's diverse growing regions
- Shop Softneck Seed Garlic → — Inchelium Red, Messedor, and Castano — including Inchelium Red, Washington's own native variety, perfect for the Puget Sound and Skagit Valley