When to Plant Green Bean in Washington

Growing Green Bean in Washington: Complete Guide

Green Bean (Phaseolus vulgaris) is a crop that grows best when sown directly in the garden. In Washington, the right time to direct sow is around Friday, January 9, 2026, once soil temperatures are consistently warm enough for germination.

Because Washington stretches across 9 USDA hardiness zones (5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a, 9b), planting windows can shift by as much as six to eight weeks from one end of the state to the other. Gardeners in the warmer southern zones can start earlier, while those in cooler northern zones should wait until the zone table above shows their last frost has passed.

With 55 days to maturity, Green Bean fits comfortably within Washington's growing season in most zones. In the warmest parts of the state, a second planting later in the season may be possible.

Green Bean requires full sun (6-8 hours) and regular (1 inch/week) moisture. The Pacific Northwest's cool, wet springs delay soil warm-up; raised beds and black plastic mulch help jump-start the season.

For the most precise planting dates tailored to your exact location, enter your ZIP code on our planting calendar or use the zone table above to find the schedule for your area of Washington.