When to Plant Dahlias in Utah
In a typical Utah location, plant outdoors May 1 – May 15. Across the state, the outdoor planting window starts as early as Mar 21 in Saint George and as late as Jun 11 in Heber City.
Plant tubers 1-3 weeks after last frost once soil is warm (60F+); very frost-sensitive.
Dahlias Planting Dates by City
| City | Plant outdoors |
|---|---|
| Salt Lake City | Apr 7 – Apr 21 |
| West Valley City | Apr 15 – Apr 29 |
| Provo | Apr 25 – May 9 |
| West Jordan | May 6 – May 20 |
| Orem | Apr 26 – May 10 |
| Sandy | May 6 – May 20 |
| Ogden | Apr 28 – May 12 |
| Layton | Apr 26 – May 10 |
| Saint George | Mar 21 – Apr 4 |
| South Jordan | Apr 25 – May 9 |
| Millcreek | May 2 – May 16 |
| Taylorsville | Apr 7 – Apr 21 |
| Lehi | May 7 – May 21 |
| Logan | May 15 – May 29 |
| Murray | May 2 – May 16 |
| Draper | Apr 25 – May 9 |
| Bountiful | May 2 – May 16 |
| Riverton | Apr 25 – May 9 |
| Pleasant Grove | Apr 24 – May 8 |
| Roy | Apr 29 – May 13 |
| Spanish Fork | May 2 – May 16 |
| Kearns | Apr 15 – Apr 29 |
| Cottonwood Heights | May 6 – May 20 |
| Tooele | May 9 – May 23 |
| Midvale | May 6 – May 20 |
| Springville | May 2 – May 16 |
| Holladay | May 6 – May 20 |
| Herriman | Apr 25 – May 9 |
| Clearfield | May 6 – May 20 |
| Kaysville | Apr 26 – May 10 |
Showing the 30 most populous of 67 Utah cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Utah cities.
Frequently Asked Questions
When should I plant dahlias in Utah?
In a typical Utah location, plant outdoors May 1 – May 15. Across the state, the outdoor planting window starts as early as Mar 21 in Saint George and as late as Jun 11 in Heber City.
When is the last frost in Utah?
The average last spring frost in Utah ranges from March 14 in Saint George to June 4 in Heber City, based on NOAA 1991–2020 climate normals.
How long do dahlias take to grow?
Dahlias typically take 90–120 days from planting to harvest. Plant tubers 1-3 weeks after last frost once soil is warm (60F+); very frost-sensitive.
Other Crops in Utah
- 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
- Sweet Potatoes
- Asparagus
- Basil
- Cilantro
- Parsley
- Dill
- Oregano
- Thyme
- Sunflowers
- Zinnias
- Marigolds
- Cosmos
- Nasturtiums
When to plant dahlias in other states