Mountain West Planting Calendar
Month-by-month planting calendar for the Mountain West. 162 crops with sow windows for a high-elevation, dry, big day-night swings climate.
Monthly Planting Calendar
The Mountain West and Intermountain region (Colorado, Utah, Idaho, Wyoming and northern New Mexico, USDA 4-6) is high, dry and sunny with large day-to-night temperature swings and unpredictable late spring frosts. The season is short to moderate: hardy crops from April, tender crops after the early-to-mid May last frost, with a fall window before the late-September frost. Garlic is planted in fall. These windows are a first-pass estimate from regional extension guidance (including USU) and are being reviewed locally.
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Growing Guides
In-depth guides for the most popular crops and techniques. These guides adapt to your region.
Free Monthly Planting Calendar
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Plan your whole garden in the app
Drag-and-drop beds, track from seed to harvest, and get Mountain West reminders every month.
Open the App →Frequently Asked Questions
Why are frosts unpredictable in the Mountain West?
High elevation and thin, dry air mean big day-to-night swings and late spring frosts. Protect tender transplants and wait until the soil warms in mid-May.
How accurate are these dates?
A careful first pass based on regional extension calendars, under local review.