When to plant in Eugene, OR
USDA Zone 8bEverything below — frost dates, hardiness zone, and what to plant when in Eugene, Oregon — is derived from the closest NOAA station with complete climate normals.
Zone 8b means many perennials and even some tender shrubs overwinter in Eugene, while your frost dates still decide when annuals go out.
The average last spring frost in Eugene 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 Eugene’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 Eugene, drawn to the day from the local frost dates. The dashed line is today.
Nearby weather stations
3 within 30 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.
Eugene planting FAQ
When is the last spring frost in Eugene, OR?
Plan for the last spring frost in Eugene 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 Eugene, OR?
The first fall frost in Eugene typically arrives around October 23 (50% probability at 32°F). Harvest or protect frost-sensitive crops before then.
What hardiness zone is Eugene in?
Eugene is in USDA hardiness zone 8b. In zone 8b, winters are mild — many tender perennials overwinter here.
How long is the growing season in Eugene?
There are roughly 195 frost-free days in Eugene (a moderate growing season), running from the average last frost around April 11 to the first fall frost near October 23.
When should I plant tomatoes in Eugene?
In Eugene, start tomato seeds indoors around February 14–February 28, then transplant seedlings outdoors around April 18 once the danger of frost has passed.
Never miss a window in Eugene
An email when it’s time to start seeds, transplant, and sow — timed to Eugene’s frost dates. Double opt-in, one-click unsubscribe, no spam.
Nearby cities
8 within reach- Santa Clara · 7 km
- Springfield · 11 km
- Cottage Grove · 29 km
- Sweet Home · 51 km
- Lebanon · 55 km
- Corvallis · 58 km
- Albany · 63 km
- Monmouth · 89 km
Frost dates recorded at EUGENE MAHLON SWEET AP, 11 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 Eugene, OR — Frost Dates & Zone 8b." Frost normals: NOAA NCEI U.S. Climate Normals 1991–2020, station USW00024221. Retrieved from https://blissgarden.com/oregon/eugene.