When to plant in Bothell West, WA
USDA Zone 8bBothell West, Washington frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
With about 253 frost-free days, Bothell West supports back-to-back plantings; stagger sowings every few weeks to keep beds productive spring through fall. In zone 8b, Bothell West supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
Frost probability
EVERETT SNOHOMISH AP · 1991–2020The date the last spring and first fall frost occur, by threshold and probability. A 90% date is later in spring — and earlier in fall — than a 10% date; the 50% · 32°F row is what most gardeners plan around. These are Bothell West’s own odds, recorded at EVERETT SNOHOMISH AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Apr 27 | Apr 3 | Mar 15 | Oct 19 | Nov 2 | Nov 20 |
| 32°F | Mar 29 | Mar 9 | Feb 15 | Oct 31 | Nov 17 | Dec 7 |
| 28°F | Mar 9 | Feb 13 | Jan 1 | Nov 15 | Dec 6 | Jan 8 |
Download this table as CSV ↓ — every threshold and probability, plus this city’s planting-window dates.
What to plant now
TODAY · JULY 19Full-year planting calendar
Each bar is the exact window to take a planting action in Bothell West, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 19 km · complete 32°F normalsWhen stations disagree by more than a few days, that spread is real microclimate variation — elevation, water, urban heat. Judge which station best matches your own yard.
Bothell West planting FAQ
When is the last spring frost in Bothell West, WA?
Plan for the last spring frost in Bothell West around March 9 (the date it has a 50% chance of a 32°F freeze). Anything frost-sensitive should go out after it.
When is the first fall frost in Bothell West, WA?
In Bothell West, the first 32°F freeze of fall lands around November 17 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Bothell West in?
Bothell West is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Bothell West?
Bothell West has about 253 frost-free days — a long growing season — between the average last spring frost (March 9) and first fall frost (November 17).
When should I plant tomatoes in Bothell West?
For Bothell West, sow tomatoes indoors about January 12–January 26 and move the seedlings out around March 16, after the last spring frost.
Never miss a window in Bothell West
An email when it’s time to start seeds, transplant, and sow — timed to Bothell West’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Alderwood Manor · 2 km
- Bothell East · 4 km
- Martha Lake · 4 km
- Bothell · 4 km
- Mountlake Terrace · 5 km
- Mill Creek East · 5 km
- Lynnwood · 5 km
- North Lynnwood · 6 km
Frost dates recorded at EVERETT SNOHOMISH AP, 12 km from the city center · 1991–2020 NOAA climate normals · zone from the USDA/PRISM 2023 map. How we compute this.
BlissGarden. "When to Plant in Bothell West, WA — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00024222. Retrieved from https://blissgarden.com/washington/bothell-west.