When to plant in Springfield, OR
USDA Zone 8bSpringfield, Oregon frost dates, USDA zone, and a full-year planting calendar, drawn from the nearest NOAA station and tuned to the local season.
These dates come from a station roughly 21 km away, the closest with full normals; terrain around Springfield (elevation, water, pavement) can move your real frost dates a few days either way. In zone 8b, Springfield supports a wide range of perennials year-round; the frost dates above are what set your annual vegetable timing.
The average last spring frost in Springfield is now 7 days earlier than in the 1981–2010 normals. See how frost dates are shifting nationwide →
Frost probability
EUGENE MAHLON SWEET 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 Springfield’s own odds, recorded at EUGENE MAHLON SWEET AP.
| Threshold | SPRING 10% | SPRING 50% | SPRING 90% | FALL 10% | FALL 50% | FALL 90% |
|---|---|---|---|---|---|---|
| 36°F | Jun 8 | May 15 | Apr 24 | Sep 18 | Oct 7 | Oct 24 |
| 32°F | May 9 | Apr 11 | Mar 15 | Oct 6 | Oct 23 | Nov 13 |
| 28°F | Mar 30 | Mar 3 | Feb 2 | Oct 20 | Nov 11 | Dec 12 |
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 Springfield, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 24 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.
Springfield planting FAQ
When is the last spring frost in Springfield, OR?
Plan for the last spring frost in Springfield around April 11 (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 Springfield, OR?
Expect Springfield's first fall frost near October 23 — a 50% chance of 32°F by that date. Bring in or cover tender crops ahead of it.
What hardiness zone is Springfield in?
Springfield is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Springfield?
Springfield has about 195 frost-free days — a moderate growing season — between the average last spring frost (April 11) and first fall frost (October 23).
When should I plant tomatoes in Springfield?
For Springfield, sow tomatoes indoors about February 14–February 28 and move the seedlings out around April 18, after the last spring frost.
Never miss a window in Springfield
An email when it’s time to start seeds, transplant, and sow — timed to Springfield’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Eugene · 11 km
- Santa Clara · 14 km
- Cottage Grove · 29 km
- Sweet Home · 45 km
- Lebanon · 53 km
- Corvallis · 62 km
- Albany · 64 km
- Monmouth · 91 km
Frost dates recorded at EUGENE MAHLON SWEET AP, 21 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 Springfield, OR — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00024221. Retrieved from https://blissgarden.com/oregon/springfield.