When to Plant Sweet Potatoes in Colorado
In a typical Colorado location, plant outdoors May 17 – May 31. Across the state, the outdoor planting window starts as early as Apr 28 in Grand Junction and as late as Jul 5 in Edwards.
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 |
|---|---|
| Denver | May 14 – May 28 |
| Colorado Springs | May 17 – May 31 |
| Aurora | May 18 – Jun 1 |
| Fort Collins | May 16 – May 30 |
| Lakewood | May 17 – May 31 |
| Thornton | May 16 – May 30 |
| Westminster | May 16 – May 30 |
| Arvada | May 19 – Jun 2 |
| Centennial | May 19 – Jun 2 |
| Pueblo | May 14 – May 28 |
| Greeley | May 16 – May 30 |
| Boulder | May 20 – Jun 3 |
| Highlands Ranch | May 19 – Jun 2 |
| Longmont | May 21 – Jun 4 |
| Loveland | May 24 – Jun 7 |
| Broomfield | May 16 – May 30 |
| Grand Junction | Apr 28 – May 12 |
| Castle Rock | May 23 – Jun 6 |
| Commerce City | May 18 – Jun 1 |
| Parker | May 23 – Jun 6 |
| Littleton | May 16 – May 30 |
| Northglenn | May 16 – May 30 |
| Brighton | May 17 – May 31 |
| Dakota Ridge | May 16 – May 30 |
| Englewood | May 16 – May 30 |
| Security-Widefield | May 17 – May 31 |
| Windsor | May 17 – May 31 |
| Ken Caryl | May 16 – May 30 |
| Wheat Ridge | May 19 – Jun 2 |
| Pueblo West | May 10 – May 24 |
Showing the 30 most populous of 65 Colorado cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Colorado cities.
Frequently Asked Questions
When should I plant sweet potatoes in Colorado?
In a typical Colorado location, plant outdoors May 17 – May 31. Across the state, the outdoor planting window starts as early as Apr 28 in Grand Junction and as late as Jul 5 in Edwards.
When is the last frost in Colorado?
The average last spring frost in Colorado ranges from April 14 in Grand Junction to June 21 in Edwards, 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 Colorado
- 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