When to Plant Swiss Chard in Colorado
In a typical Colorado location, sow outdoors Apr 12 – Apr 26. Across the state, the outdoor planting window starts as early as Mar 24 in Grand Junction and as late as May 31 in Edwards.
Fairly cold-hardy; direct sow 1-3 weeks before last frost. Tolerates light frost in fall too.
Swiss Chard Planting Dates by City
| City | Direct sow |
|---|---|
| Denver | Apr 9 – Apr 23 |
| Colorado Springs | Apr 12 – Apr 26 |
| Aurora | Apr 13 – Apr 27 |
| Fort Collins | Apr 11 – Apr 25 |
| Lakewood | Apr 12 – Apr 26 |
| Thornton | Apr 11 – Apr 25 |
| Westminster | Apr 11 – Apr 25 |
| Arvada | Apr 14 – Apr 28 |
| Centennial | Apr 14 – Apr 28 |
| Pueblo | Apr 9 – Apr 23 |
| Greeley | Apr 11 – Apr 25 |
| Boulder | Apr 15 – Apr 29 |
| Highlands Ranch | Apr 14 – Apr 28 |
| Longmont | Apr 16 – Apr 30 |
| Loveland | Apr 19 – May 3 |
| Broomfield | Apr 11 – Apr 25 |
| Grand Junction | Mar 24 – Apr 7 |
| Castle Rock | Apr 18 – May 2 |
| Commerce City | Apr 13 – Apr 27 |
| Parker | Apr 18 – May 2 |
| Littleton | Apr 11 – Apr 25 |
| Northglenn | Apr 11 – Apr 25 |
| Brighton | Apr 12 – Apr 26 |
| Dakota Ridge | Apr 11 – Apr 25 |
| Englewood | Apr 11 – Apr 25 |
| Security-Widefield | Apr 12 – Apr 26 |
| Windsor | Apr 12 – Apr 26 |
| Ken Caryl | Apr 11 – Apr 25 |
| Wheat Ridge | Apr 14 – Apr 28 |
| Pueblo West | Apr 5 – Apr 19 |
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 Swiss chard in Colorado?
In a typical Colorado location, sow outdoors Apr 12 – Apr 26. Across the state, the outdoor planting window starts as early as Mar 24 in Grand Junction and as late as May 31 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 Swiss chard take to grow?
Swiss Chard typically take 50–60 days from planting to harvest. Fairly cold-hardy; direct sow 1-3 weeks before last frost. Tolerates light frost in fall too.
Other Crops in Colorado
- Tomatoes
- Peppers
- Eggplant
- Cucumbers
- Zucchini
- Winter Squash
- Pumpkins
- Watermelon
- Cantaloupe
- Corn
- Green Beans
- Peas
- Lettuce
- Spinach
- Kale
- Arugula
- 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
- Dahlias
When to plant Swiss chard in other states