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When to Plant Black Beans in Montezuma County, CO

Black beans are a warm-season legume producing small, dark, protein-rich beans that are a staple in Latin American and Caribbean cuisines.

Montezuma County, Colorado is in USDA Zone 5b. The average last spring frost is May 27 and the first fall frost is September 27, giving you a growing season of approximately 123 days.

At an elevation of 8,063 feet, Montezuma County receives approximately 15.2 inches of rainfall annually with predominantly loam soil. Summer highs average 84ยฐF, so choose short-season varieties of Black Beans to ensure they mature before fall. With low rainfall, drip irrigation is essential for growing Black Beans successfully. Mulch heavily to conserve soil moisture.

Montezuma County, CO (Zone 5b) Short season
123 days
Last Spring Frost May 27
123 growing days
First Fall Frost September 27

Montezuma County Soil Profile

Soil Type

Loam

Soil pH

6.4-7.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: May 19 🍅 Harvest: Aug 18 – Oct 6
Recommended (50%) ✗ May not fit
Transplant: May 27 🍅 Harvest: Aug 26 – Oct 14
Safe Start (90%) ✗ May not fit
Transplant: Jun 13 🍅 Harvest: Sep 12 – Oct 31

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.5″/week
You supply
0.6″/week
Watering frequency 1-2 times/week
Season total 632 gal / 100 sq ft
Drought risk

Water stress score is 8/10 โ€” consider drought-tolerant varieties and mulching

Black Beans needs ~1,365 GDD — county provides 1,599 GDD Good fit

Black Beans Planting Timeline โ€” Montezuma County, CO

Black Beans Planting Calendar

Activity When Date Range
Direct Sow June 3 Jun 3 โ€“ Jun 24
Harvest September 2 Sep 2 โ€“ Oct 21

Plant 1" deep ยท 15" apart ยท Rows 24" apart

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April โ€”
May โ€”
June Direct Sow
July โ€”
August โ€”
September Harvest
October Harvest
November โ€”
December โ€”

Growing Conditions

Sun

Full Sun (6-8+ hours)

Water

Moderate โ€” regular watering

Days to Maturity

90โ€“120 days

Soil pH

6 โ€“ 7.5

USDA Zone

Zone 5b

Growing Season

123 days

Growing Tips for Montezuma County

Direct sow after last frost. Provide support for climbing varieties. Allow pods to dry fully on the vine before harvesting. Thresh dried pods by hand or in a pillowcase.

Companion Planting

Good Companions

Avoid Planting Near

  • Onion
  • Garlic

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Frequently Asked Questions

When should I plant Black Beans in Montezuma County, CO?

Montezuma County is in Zone 5b with an average last frost of May 27. Plan your Black Beans planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Montezuma County, CO?

Montezuma County, Colorado is in USDA Hardiness Zone 5b. The average last spring frost is May 27 and first fall frost is September 27.

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Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Montezuma County gardeners in Zone 5b organize planting dates, track what's growing, and never miss a planting window.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Montezuma County, CO. Local conditions may vary. Last updated: April 2026.