When to plant in Four Corners, OR
USDA Zone 8bEverything below — frost dates, hardiness zone, and what to plant when in Four Corners, Oregon — is derived from the closest NOAA station with complete climate normals.
Zone 8b means many perennials and even some tender shrubs overwinter in Four Corners, while your frost dates still decide when annuals go out.
The average last spring frost in Four Corners is now 15 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
SALEM MCNARY FLD · 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 Four Corners’s own odds, recorded at SALEM MCNARY FLD.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | May 16 | Apr 30 | Apr 14 | Oct 2 | Oct 18 | Nov 2 |
| 32°F | Apr 27 | Apr 3 | Mar 10 | Oct 16 | Nov 1 | Nov 23 |
| 28°F | Mar 30 | Mar 2 | Jan 31 | Oct 30 | Nov 22 | Dec 17 |
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 Four Corners, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 20 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.
Four Corners planting FAQ
When is the last spring frost in Four Corners, OR?
On average, the last spring frost in Four Corners is around April 3 (50% probability at 32°F, from 1991–2020 NOAA normals). Wait until after this date to set out tender plants like tomatoes and peppers.
When is the first fall frost in Four Corners, OR?
In Four Corners, the first 32°F freeze of fall lands around November 1 on average. Time your last harvests and any season-extension cover before it.
What hardiness zone is Four Corners in?
Four Corners is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Four Corners?
There are roughly 212 frost-free days in Four Corners (a long growing season), running from the average last frost around April 3 to the first fall frost near November 1.
When should I plant tomatoes in Four Corners?
In Four Corners, start tomato seeds indoors around February 6–February 20, then transplant seedlings outdoors around April 10 once the danger of frost has passed.
Never miss a window in Four Corners
An email when it’s time to start seeds, transplant, and sow — timed to Four Corners’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Salem · 4 km
- Hayesville · 6 km
- Keizer · 9 km
- Silverton · 17 km
- Independence · 19 km
- Monmouth · 22 km
- Woodburn · 26 km
- Dallas · 27 km
Frost dates recorded at SALEM MCNARY FLD, 3 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 Four Corners, OR — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00024232. Retrieved from https://blissgarden.com/oregon/four-corners.