When to plant in Hazel Dell, WA
USDA Zone 8bEverything below — frost dates, hardiness zone, and what to plant when in Hazel Dell, Washington — is derived from the closest NOAA station with complete climate normals.
Zone 8b means many perennials and even some tender shrubs overwinter in Hazel Dell, while your frost dates still decide when annuals go out.
The average last spring frost in Hazel Dell is now 5 days later than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
VANCOUVER 4 NNE · 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 Hazel Dell’s own odds, recorded at VANCOUVER 4 NNE.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 30 | May 10 | Apr 28 | Sep 14 | Oct 1 | Oct 22 |
| 32°F | May 10 | Apr 26 | Apr 7 | Oct 1 | Oct 18 | Nov 8 |
| 28°F | Apr 20 | Mar 30 | Mar 8 | Oct 16 | Nov 4 | Nov 28 |
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 Hazel Dell, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 11 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.
Hazel Dell planting FAQ
When is the last spring frost in Hazel Dell, WA?
Plan for the last spring frost in Hazel Dell around April 26 (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 Hazel Dell, WA?
Expect Hazel Dell's first fall frost near October 18 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Hazel Dell in?
Hazel Dell is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Hazel Dell?
There are roughly 175 frost-free days in Hazel Dell (a moderate growing season), running from the average last frost around April 26 to the first fall frost near October 18.
When should I plant tomatoes in Hazel Dell?
In Hazel Dell, start tomato seeds indoors around March 1–March 15, then transplant seedlings outdoors around May 3 once the danger of frost has passed.
Never miss a window in Hazel Dell
An email when it’s time to start seeds, transplant, and sow — timed to Hazel Dell’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Salmon Creek · 3 km
- Minnehaha · 4 km
- Felida · 6 km
- Mount Vista · 6 km
- Five Corners · 6 km
- Vancouver · 7 km
- Orchards · 10 km
- Battle Ground · 14 km
Frost dates recorded at VANCOUVER 4 NNE, 0 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 Hazel Dell, WA — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USC00458773. Retrieved from https://blissgarden.com/washington/hazel-dell.