When to Plant Spinach in Montana
In a typical Montana location, sow outdoors Apr 2 – Apr 16. Across the state, the outdoor planting window starts as early as Mar 24 in Laurel and as late as May 2 in Butte. For a fall crop, plant around Aug 3 – Aug 17.
Very cold-hardy; direct sow 4-6 weeks before last frost as soon as soil can be worked.
Spinach Planting Dates by City
| City | Direct sow | Fall planting |
|---|---|---|
| Billings | Mar 29 – Apr 12 | Aug 6 – Aug 20 |
| Missoula | Mar 29 – Apr 12 | Aug 6 – Aug 20 |
| Great Falls | Mar 25 – Apr 8 | Aug 6 – Aug 20 |
| Bozeman | Apr 14 – Apr 28 | Jul 28 – Aug 11 |
| Butte | May 2 – May 16 | Jul 11 – Jul 25 |
| Helena | Mar 28 – Apr 11 | Aug 5 – Aug 19 |
| Kalispell | Apr 19 – May 3 | Jul 16 – Jul 30 |
| Havre | Apr 3 – Apr 17 | Jul 29 – Aug 12 |
| Anaconda | Apr 20 – May 4 | Jul 20 – Aug 3 |
| Miles City | Mar 27 – Apr 10 | Aug 5 – Aug 19 |
| Helena Valley Southeast | Mar 28 – Apr 11 | Aug 5 – Aug 19 |
| Belgrade | Apr 14 – Apr 28 | Jul 22 – Aug 5 |
| Helena Valley West Central | Mar 28 – Apr 11 | Aug 5 – Aug 19 |
| Evergreen | Apr 19 – May 3 | Jul 16 – Jul 30 |
| Livingston | Apr 15 – Apr 29 | Jul 20 – Aug 3 |
| Whitefish | Apr 4 – Apr 18 | Jul 31 – Aug 14 |
| Laurel | Mar 24 – Apr 7 | Aug 8 – Aug 22 |
| Sidney | Mar 30 – Apr 13 | Aug 2 – Aug 16 |
| Lockwood | Mar 29 – Apr 12 | Aug 6 – Aug 20 |
| Lewistown | Apr 2 – Apr 16 | Aug 3 – Aug 17 |
Showing the 20 most populous of 20 Montana cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Montana cities.
Frequently Asked Questions
When should I plant spinach in Montana?
In a typical Montana location, sow outdoors Apr 2 – Apr 16. Across the state, the outdoor planting window starts as early as Mar 24 in Laurel and as late as May 2 in Butte. For a fall crop, plant around Aug 3 – Aug 17.
When is the last frost in Montana?
The average last spring frost in Montana ranges from May 5 in Laurel to June 13 in Butte, based on NOAA 1991–2020 climate normals.
How long do spinach take to grow?
Spinach typically take 40–50 days from planting to harvest. Very cold-hardy; direct sow 4-6 weeks before last frost as soon as soil can be worked.
Other Crops in Montana
- Tomatoes
- Peppers
- Eggplant
- Cucumbers
- Zucchini
- Winter Squash
- Pumpkins
- Watermelon
- Cantaloupe
- Corn
- Green Beans
- Peas
- Lettuce
- 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
- Dahlias
When to plant spinach in other states