When to Plant Sweet Potatoes in Oregon
In a typical Oregon location, plant outdoors Apr 17 – May 1. Across the state, the outdoor planting window starts as early as Feb 25 in Beaverton and as late as Jun 23 in Altamont.
Set out slips 2-4 weeks after last frost once soil is thoroughly warm (65F+); very frost/cold sensitive.
Sweet Potatoes Planting Dates by City
| City | Plant outdoors |
|---|---|
| Portland | Mar 11 – Mar 25 |
| Eugene | Apr 25 – May 9 |
| Salem | Apr 17 – May 1 |
| Gresham | Mar 30 – Apr 13 |
| Hillsboro | Apr 30 – May 14 |
| Beaverton | Feb 25 – Mar 11 |
| Bend | Jun 20 – Jul 4 |
| Medford | Apr 22 – May 6 |
| Springfield | Apr 25 – May 9 |
| Corvallis | May 1 – May 15 |
| Albany | May 1 – May 15 |
| Tigard | Apr 15 – Apr 29 |
| Aloha | Feb 25 – Mar 11 |
| Lake Oswego | Apr 1 – Apr 15 |
| Keizer | Apr 17 – May 1 |
| Grants Pass | Apr 22 – May 6 |
| Oregon City | Apr 1 – Apr 15 |
| McMinnville | Apr 19 – May 3 |
| Redmond | Jun 23 – Jul 7 |
| Tualatin | Apr 15 – Apr 29 |
| West Linn | Apr 1 – Apr 15 |
| Woodburn | Mar 30 – Apr 13 |
| Forest Grove | Apr 30 – May 14 |
| Newberg | Apr 4 – Apr 18 |
| Wilsonville | Apr 1 – Apr 15 |
| Roseburg | Apr 6 – Apr 20 |
| Klamath Falls | Jun 23 – Jul 7 |
| Ashland | May 20 – Jun 3 |
| Milwaukie | Mar 11 – Mar 25 |
| Bethany | Apr 30 – May 14 |
Showing the 30 most populous of 68 Oregon cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Oregon cities.
Frequently Asked Questions
When should I plant sweet potatoes in Oregon?
In a typical Oregon location, plant outdoors Apr 17 – May 1. Across the state, the outdoor planting window starts as early as Feb 25 in Beaverton and as late as Jun 23 in Altamont.
When is the last frost in Oregon?
The average last spring frost in Oregon ranges from February 11 in Beaverton to June 9 in Altamont, based on NOAA 1991–2020 climate normals.
How long do sweet potatoes take to grow?
Sweet Potatoes typically take 90–120 days from planting to harvest. Set out slips 2-4 weeks after last frost once soil is thoroughly warm (65F+); very frost/cold sensitive.
Other Crops in Oregon
- Tomatoes
- Peppers
- Eggplant
- Cucumbers
- Zucchini
- Winter Squash
- Pumpkins
- Watermelon
- Cantaloupe
- Corn
- Green Beans
- Peas
- Lettuce
- Spinach
- Kale
- Arugula
- Swiss Chard
- Broccoli
- Cauliflower
- Cabbage
- Brussels Sprouts
- Carrots
- Beets
- Radishes
- Turnips
- Onions
- Garlic
- Potatoes
- Asparagus
- Basil
- Cilantro
- Parsley
- Dill
- Oregano
- Thyme
- Sunflowers
- Zinnias
- Marigolds
- Cosmos
- Nasturtiums
- Dahlias
When to plant sweet potatoes in other states