Oregon frost dates
Typical and safer frost dates for 1 cities in Oregon, each from its nearest NOAA station. Elevation matters here as much as latitude, so check the city closest to you.
| City | Last frost · typical | Last frost · safer | First frost · typical | Frost-free days |
|---|---|---|---|---|
| Portland | Feb 25 | Mar 21 | Dec 1 | 280 |
Planting calendar for Portland
The largest city we cover in Oregon. Other cities: see their own page.
Frost dates
Feb 25
Last spring frost, typical
In half of the years that freeze, the last frost comes later.
Safer date: Mar 21. Only 1 freeze year in 10 has a frost after this.
Dec 1
First fall frost, typical
In half of the years that freeze, it comes earlier.
Early date: Nov 10. Only 1 freeze year in 10 freezes before this.
280
Days, typical frost-free season
From NOAA’s 1991–2020 climate normals for this station.
What to plant right now
As of Nov 9, 2026
Typical frost-free season: 280 days. Station: Portland Kgw-Tv, OR, 4 km away. Source: NOAA NCEI U.S. Climate Normals 1991–2020 (32°F threshold).
January
The next window opens in January.
Peppertender
Next: start indoors from Jan 10
- Start indoors
- Jan 10 – Jan 24
- Transplant outdoors
- Mar 21 – Apr 4
Parsleyhalf hardy
Next: start indoors from Jan 10
- Start indoors
- Jan 10 – Jan 24
- Sow outdoors
- Mar 7 – Mar 21
Tomatotender
Next: start indoors from Jan 24
- Start indoors
- Jan 24 – Feb 7
- Transplant outdoors
- Mar 21 – Apr 4
Eggplanttender
Next: start indoors from Jan 24
- Start indoors
- Jan 24 – Feb 7
- Transplant outdoors
- Mar 21 – Apr 4
Broccolihardy
Next: start indoors from Jan 24
- Start indoors
- Jan 24 – Feb 7
- Transplant outdoors
- Feb 21 – Mar 21
- Sow outdoors
- Feb 21 – Mar 7
- Sow for fall
- Aug 18 – Sep 1
Cabbagehardy
Next: start indoors from Jan 24
- Start indoors
- Jan 24 – Feb 7
- Transplant outdoors
- Feb 21 – Mar 21
- Sow outdoors
- Feb 21 – Mar 7
- Sow for fall
- Aug 18 – Sep 1
Cauliflowerhalf hardy
Next: start indoors from Jan 24
- Start indoors
- Jan 24 – Feb 7
- Transplant outdoors
- Mar 7 – Mar 21
- Sow outdoors
- Feb 28 – Mar 21
- Sow for fall
- Aug 18 – Sep 1
Brussels sproutshardy
Next: start indoors from Jan 24
- Start indoors
- Jan 24 – Feb 7
- Sow outdoors
- Feb 28 – Feb 28
- Sow for fall
- Aug 18 – Sep 1
Marigoldtender
Next: start indoors from Jan 24
- Start indoors
- Jan 24 – Jan 24
- Transplant outdoors
- Mar 21 – Mar 21
Calendulahalf hardy
Next: start indoors from Jan 24
- Start indoors
- Jan 24 – Feb 7
- Sow outdoors
- Mar 14 – Mar 21
Mexican sunflowertender
Next: start indoors from Jan 24
- Start indoors
- Jan 24 – Feb 7
- Sow outdoors
- Mar 21 – Mar 21
February
The next window opens in February.
Leaf lettucehardy
Next: sow outdoors from Feb 7
- Transplant outdoors
- Feb 21 – Mar 7
- Sow outdoors
- Feb 7 – Mar 7
Head lettucehardy
Next: sow outdoors from Feb 7
- Transplant outdoors
- Feb 21 – Mar 7
- Sow outdoors
- Feb 7 – Mar 7
Zinniatender
Next: start indoors from Feb 7
- Start indoors
- Feb 7 – Feb 21
- Sow outdoors
- Mar 21 – Mar 21
Nasturtiumtender
Next: start indoors from Feb 7
- Start indoors
- Feb 7 – Feb 21
- Sow outdoors
- Mar 21 – Mar 21
Sunflowertender
Next: start indoors from Feb 7
- Start indoors
- Feb 7 – Feb 21
Cucumbertender
Next: start indoors from Feb 21
- Start indoors
- Feb 21 – Mar 7
- Sow outdoors
- Mar 21 – Mar 28
Summer squashtender
Next: start indoors from Feb 21
- Start indoors
- Feb 21 – Mar 7
- Sow outdoors
- Mar 21 – Mar 28
Winter squashtender
Next: start indoors from Feb 21
- Start indoors
- Feb 21 – Mar 7
- Sow outdoors
- Mar 28 – Apr 4
Watermelontender
Next: start indoors from Feb 21
- Start indoors
- Feb 21 – Mar 7
- Transplant outdoors
- Mar 28 – Apr 4
- Sow outdoors
- Mar 28 – Apr 4
Cantaloupetender
Next: start indoors from Feb 21
- Start indoors
- Feb 21 – Feb 28
- Sow outdoors
- Mar 28 – Apr 4
Peahardy
Next: sow outdoors from Feb 21
- Sow outdoors
- Feb 21 – Mar 7
Spinachhardy
Next: sow outdoors from Feb 21
- Sow outdoors
- Feb 21 – Mar 7
Kohlrabihardy
Next: sow outdoors from Feb 21
- Sow outdoors
- Feb 21 – Mar 7
- Sow for fall
- Aug 18 – Sep 1
Radishhardy
Next: sow outdoors from Feb 21
- Sow outdoors
- Feb 21 – Mar 7
Beethalf hardy
Next: sow outdoors from Feb 21
- Sow outdoors
- Feb 21 – Mar 21
Turniphardy
Next: sow outdoors from Feb 21
- Sow outdoors
- Feb 21 – Mar 7
Bulb onionhardy
Next: sow outdoors from Feb 21
- Sow outdoors
- Feb 21 – Mar 7
Green onionhardy
Next: sow outdoors from Feb 21
- Sow outdoors
- Feb 21 – Mar 7
Kalehardy
Next: sow outdoors from Feb 28
- Sow outdoors
- Feb 28 – Feb 28
- Sow for fall
- Aug 18 – Sep 1
Collardshardy
Next: sow outdoors from Feb 28
- Sow outdoors
- Feb 28 – Feb 28
- Sow for fall
- Aug 18 – Sep 1
March
The next window opens in March.
Swiss chardhalf hardy
Next: sow outdoors from Mar 7
- Sow outdoors
- Mar 7 – Mar 21
Carrothalf hardy
Next: sow outdoors from Mar 7
- Sow outdoors
- Mar 7 – Mar 21
Potatohalf hardy
Next: sow outdoors from Mar 7
- Sow outdoors
- Mar 7 – Mar 21
Parsniphalf hardy
Next: sow outdoors from Mar 7
- Sow outdoors
- Mar 7 – Mar 21
Dillhalf hardy
Next: sow outdoors from Mar 7
- Sow outdoors
- Mar 7 – Mar 14
Bush beantender
Next: sow outdoors from Mar 21
- Sow outdoors
- Mar 21 – Mar 21
Pole beantender
Next: sow outdoors from Mar 21
- Sow outdoors
- Mar 21 – Mar 21
Sweet corntender
Next: sow outdoors from Mar 21
- Sow outdoors
- Mar 21 – Mar 21
Basiltender
Next: sow outdoors from Mar 21
- Sow outdoors
- Mar 21 – Mar 21
Marjoramtender
Next: transplant outdoors from Mar 21
- Transplant outdoors
- Mar 21 – Mar 21
Pumpkintender
Next: sow outdoors from Mar 28
- Sow outdoors
- Mar 28 – Apr 4
April
The next window opens in April.
Lima beantender
Next: sow outdoors from Apr 4
- Sow outdoors
- Apr 4 – Apr 4
September
The next window opens in September.
Sweet alyssumhardy
Next: sow for fall from Sep 29
- Sow for fall
- Sep 29 – Sep 29
No window listed
No frost-based window for these crops.
Mustard greenshalf hardy
No frost-based window listed.
No frost-based sowing window is listed for mustard greens.