When to Plant Black Beans in Isabella County, MI
Black beans are a warm-season legume producing small, dark, protein-rich beans that are a staple in Latin American and Caribbean cuisines.
Isabella County, Michigan is in USDA Zone 5a. The average last spring frost is May 4 and the first fall frost is October 13, giving you a growing season of approximately 162 days.
At an elevation of 1,136 feet, Isabella County receives approximately 35.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 84°F, so choose short-season varieties of Black Beans to ensure they mature before fall.
Isabella County Soil Profile
Soil Type
Silt Loam
Soil pH
6.3-6.8
Drainage
Well Drained
Plant Planting Risk Windows
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
Black Beans Planting Timeline — Isabella County, MI
Black Beans Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | May 11 | May 11 – Jun 1 |
| Harvest | August 10 | Aug 10 – Sep 28 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | Direct Sow |
| June | Direct Sow |
| July | — |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
Sun
Full Sun (6-8+ hours)
Water
Moderate — regular watering
Days to Maturity
90–120 days
Soil pH
6 – 7.5
USDA Zone
Zone 5a
Growing Season
162 days
Growing Tips for Isabella 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
Level Up Your Garden
Black Beans in Other Locations
Frequently Asked Questions
When should I plant Black Beans in Isabella County, MI?
Isabella County is in Zone 5a with an average last frost of May 4. Plan your Black Beans planting based on this frost date — see the calendar above for exact timing.
What planting zone is Isabella County, MI?
Isabella County, Michigan is in USDA Hardiness Zone 5a. The average last spring frost is May 4 and first fall frost is October 13.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Isabella County gardeners in Zone 5a organize planting dates, track what's growing, and never miss a planting window.
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