Tacoma, WA Frost Dates
Average frost dates, USDA hardiness zone, and growing season length for Tacoma, Washington.
Gardening in Tacoma
Tacoma gardens quietly outproduce Seattle's — and Tacoma gardeners take a little pride in that. The City of Destiny has a growing food garden culture centered around Point Defiance, the Proctor district, and neighborhoods where raised beds in front yards are a common sight. Less tech-bro, more dirt-under-fingernails.
Zone 8b means mild winters, cool summers, and a growing season that accommodates everything from year-round kale to summer tomatoes (in a good year). Tacoma gets slightly less rain than Seattle and slightly more sun — advantages that gardeners notice even if the weather reports don't. The volcanic soil from Rainier's lahar history is rich but varies wildly by neighborhood. Your soil in the North End is not the same soil in South Tacoma.
Rainiers fans know about loyalty to something great that not everyone appreciates yet — Tacoma gardeners feel the same way about their city's growing conditions. The UPS campus proves ornamental gardening thrives here. The Tacoma Tilth Alliance has been teaching urban farming since before urban farming was cool. And yes, you can see Rainier from your garden on clear days, and yes, it never gets old.
What This Means for Tacoma Gardeners
The average last spring frost in Tacoma is around March 5, and the average first fall frost arrives around November 15. That gives you approximately 255 frost-free days to work with.
That's a generous season. You have time for full-size tomatoes, long-season peppers, and even watermelons without the anxiety of racing the frost. Start warm-season seeds indoors 6-8 weeks before your last frost to hit the ground running. Fall planting is your second opportunity — garlic, kale, lettuce, and broccoli all go in 8-10 weeks before your first frost for harvest into late autumn.
These dates are based on NOAA 30-year Climate Normal data for the Tacoma area. Your actual frost dates could shift 2-3 weeks in either direction in any given year. Learn more about our data sources.
What to Grow in Tacoma
Tacoma's 255-day growing season is generous — long enough for two full growing windows (spring and fall) with warm-season crops between them. You can grow the full range of vegetables, herbs, and flowers with proper timing. Focus on heat-tolerant varieties for midsummer and cool-season crops for extended fall harvests. Recommended starting points: tomatoes, peppers, beans, cucumbers, squash, garlic, kale, and sunflowers.
See the full Washington planting guide for all 40 plants: Washington Planting Calendar. Or enter your zip code for exact planting dates personalized to Tacoma.
More About Zone 8B
Tacoma is in USDA Hardiness Zone 8B, which means average annual extreme minimum temperatures between 15°F to 20°F. View the full Zone 8B planting guide.
See the complete planting calendar for Washington: Washington Planting Calendar.
Other Cities in Washington
Frequently Asked Questions
These dates are based on NOAA's 30-year Climate Normal data for the Tacoma area. They represent historical averages, not predictions. In any given year, the actual last frost could be 2-3 weeks earlier or later. Microclimates within Tacoma (urban heat islands, hilltops, low-lying valleys) can also shift your local frost dates by a week or more.
Cool-season crops go in 3-4 weeks before your last frost (March 5). Warm-season crops wait until 2 weeks after. You have time for a fall round too — plant cool-season crops again in late summer for harvest into autumn. Enter your zip code for exact dates.