Planting calendar
When to plant carrots in Montana
Montana spans USDA hardiness zones 3-6. Average last spring frost: 05-25. This calendar gives you the indoor start, transplant, and direct-sow dates for Daucus carota.
Montana planting dates for carrots
| Phase | Date in Montana | Notes |
|---|---|---|
| Direct sow outside | May 4 | 3 weeks before last frost |
Why these dates
Carrots are slow to germinate (14-21 days) and need loose, rock-free soil at least 8 inches deep. Avoid fresh manure - it causes forking.
The dates above are anchored to Montana's average last spring frost date of 05-25, with offsets standard across university Extension publications. For zone-specific local timing, use the frost date lookup tool with your ZIP code.
More on growing carrots
The full growing guide for carrots - varieties, soil, fertilization, pests, harvest, storage - is here: Carrots growing guide.
More Montana planting information
- Full Montana planting calendar (all crops + ornamentals)
- Find your exact USDA zone by ZIP
- Look up your average frost dates
- Seed starting timeline calculator