When to Plant Swiss Chard in Idaho
In a typical Idaho location, sow outdoors Apr 9 – Apr 23. Across the state, the outdoor planting window starts as early as Mar 16 in Lewiston and as late as Apr 26 in Eagle. 2 cities in Idaho are essentially frost-free and can plant on a year-round schedule.
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 |
|---|---|
| Boise | Apr 3 – Apr 17 |
| Meridian | Apr 3 – Apr 17 |
| Nampa | Apr 8 – Apr 22 |
| Idaho Falls | Apr 18 – May 2 |
| Pocatello | Apr 11 – Apr 25 |
| Caldwell | Apr 2 – Apr 16 |
| Coeur d'Alene | Apr 1 – Apr 15 |
| Twin Falls | Apr 9 – Apr 23 |
| Lewiston | Mar 16 – Mar 30 |
| Lewiston Orchards | Mar 16 – Mar 30 |
| Post Falls | Apr 1 – Apr 15 |
| Rexburg | Apr 24 – May 8 |
| Moscow | Frost-free: year-round planting |
| Eagle | Apr 26 – May 10 |
| Conda | Frost-free: year-round planting |
| Kuna | Apr 3 – Apr 17 |
| Ammon | Apr 18 – May 2 |
| Chubbuck | Apr 11 – Apr 25 |
| Hayden | Apr 1 – Apr 15 |
| Mountain Home | Apr 11 – Apr 25 |
| Blackfoot | Apr 14 – Apr 28 |
| Garden City | Apr 3 – Apr 17 |
| Jerome | Apr 11 – Apr 25 |
| Burley | Apr 16 – Apr 30 |
Showing the 24 most populous of 24 Idaho cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Idaho cities.
Frequently Asked Questions
When should I plant Swiss chard in Idaho?
In a typical Idaho location, sow outdoors Apr 9 – Apr 23. Across the state, the outdoor planting window starts as early as Mar 16 in Lewiston and as late as Apr 26 in Eagle. 2 cities in Idaho are essentially frost-free and can plant on a year-round schedule.
When is the last frost in Idaho?
The average last spring frost in Idaho ranges from April 6 in Lewiston to May 17 in Eagle, 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 Idaho
- 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