When to Plant Potatoes in Oregon
In Oregon, the time to plant potatoes outside runs from Jan 31 – Feb 14 in Coos Bay to May 19 – Jun 2 in Redmond. In Portland, it's Feb 4 – Feb 18. The average last spring frost differs by about 15 weeks across the state (Feb 21 in Coos Bay, Jun 9 in Redmond), so use the dates for the town nearest you.
Plant seed potatoes a few weeks before the last frost; cover any shoots if a late frost threatens.
- Plant outside: 1–3 weeks before the last frost.
Potatoes planting dates in Oregon by city
| City | Zone | Plant outside |
|---|---|---|
| Albany | 8b | Mar 27 – Apr 10 |
| Ashland | 8a | Apr 15 – Apr 29 |
| Beaverton | 9a | Mar 11 – Mar 25 |
| Bend | 6b | May 16 – May 30 |
| Canby | 8b | Feb 25 – Mar 11 |
| Central Point | 8b | Mar 18 – Apr 1 |
| Coos Bay | 9a | Jan 31 – Feb 14 |
| Cornelius | 8b | Mar 26 – Apr 9 |
| Corvallis | 8b | Mar 27 – Apr 10 |
| Dallas | 8b | Mar 26 – Apr 9 |
| Eugene | 8b | Mar 21 – Apr 4 |
| Forest Grove | 8b | Mar 26 – Apr 9 |
| Grants Pass | 8b | Mar 18 – Apr 1 |
| Gresham | 9a | Feb 23 – Mar 9 |
| Happy Valley | 8b | Feb 25 – Mar 11 |
| Hermiston | 7b | Apr 5 – Apr 19 |
| Hillsboro | 8b | Mar 26 – Apr 9 |
| Keizer | 8b | Mar 13 – Mar 27 |
| Klamath Falls | 6b | May 19 – Jun 2 |
| Lake Oswego | 9a | Feb 25 – Mar 11 |
| Lebanon | 8b | Feb 21 – Mar 7 |
| McMinnville | 8b | Mar 15 – Mar 29 |
| Medford | 8b | Mar 18 – Apr 1 |
| Milwaukie | 9a | Feb 4 – Feb 18 |
| Newberg | 8b | Feb 28 – Mar 14 |
| Oregon City | 9a | Feb 25 – Mar 11 |
| Pendleton | 7a | Apr 1 – Apr 15 |
| Portland | 8b | Feb 4 – Feb 18 |
| Redmond | 6b | May 19 – Jun 2 |
| Roseburg | 8b | Mar 2 – Mar 16 |
| Salem | 8b | Mar 13 – Mar 27 |
| Sherwood | 8b | Feb 28 – Mar 14 |
| Springfield | 8b | Mar 21 – Apr 4 |
| The Dalles | 8a | Mar 21 – Apr 4 |
| Tigard | 9a | Mar 11 – Mar 25 |
| Troutdale | 9a | Mar 5 – Mar 19 |
| Tualatin | 9a | Mar 11 – Mar 25 |
| West Linn | 9a | Feb 25 – Mar 11 |
| Wilsonville | 8b | Feb 25 – Mar 11 |
| Woodburn | 8b | Feb 23 – Mar 9 |
Calculated from each town's average (50%) frost dates, from the nearest NOAA station (1991–2020). Typical dates for the 2027 planting season, based on NOAA's 1991–2020 averages. They are long-term odds, not a forecast: always check your local forecast before planting. Zones: 2023 USDA Plant Hardiness Zone Map (USDA-ARS and Oregon State University). Not the official map; see planthardiness.ars.usda.gov.
See all frost dates in Oregon, or the general guide to when to plant potatoes.
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