🥬 Can I Plant Mustard Greens in Spokane, WA?
Temperature conditions are suitable for Mustard Greens. Highs near 94°F are on the warm side — make sure plants have plenty of water.
Growing Mustard Greens in Spokane
Spokane's Zone 6b inland Pacific Northwest climate differs significantly from Seattle's — less rain, more sun, and more extreme temperature swings. The Palouse region's continental climate means hot, dry summers ideal for tomatoes and peppers (a welcome contrast to rainy western Washington). The frost-free window of about 171 days is adequate for a wide range of crops when warm-season starts begin indoors in late March.
In Spokane (last frost around April 22), mustard greens can go out around March — approximately 6 weeks before the last expected frost, making it an early-season opportunity.
Mustard Greens thrives between 40°F and 65°F. It tolerates temperatures as low as 25°F, making it a candidate for early spring planting before the last frost date. Expect 25–45 days from transplant to first harvest. Fast-growing cool-season green. Bolts in heat.
Frequently Asked Questions
When can I plant mustard greens in Spokane, WA?
In Spokane (last frost around April 22), mustard greens can go out around March — approximately 6 weeks before the last expected frost, making it an early-season opportunity.
What is the USDA hardiness zone for Spokane?
Spokane, WA is in USDA Plant Hardiness Zone 6b. The last expected spring frost is around April 22, and the first fall frost arrives around October 11. This zone classification helps you understand which perennials survive winter and when annual vegetables can safely go outdoors.
Is it safe to plant mustard greens outside in Spokane right now?
That depends on the current weather forecast. Mustard Greens needs temperatures above 25°F (ideally 40–65°F) to thrive. CanIPlant checks your real 7-day forecast and any active frost alerts to give you a live YES, NO, or WAIT answer — just enter your ZIP code.
Can I grow mustard greens in Spokane 2026?
Yes — Mustard Greens grows well in Spokane, WA. With a Zone 6b climate and a growing season of ~172 days, Spokane is well-suited for cool-season crops like mustard greens. As a frost-tolerant crop, mustard greens can even go out a few weeks before the last frost date.
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