When to Plant Green Beans in Park County, MT
Green beans are a warm-season staple available as bush or pole types. Bush beans produce a concentrated harvest while pole beans provide a longer picking season.
Park County, Montana is in USDA Zone 4b. The average last spring frost is May 24 and the first fall frost is September 20, giving you a growing season of approximately 119 days.
At an elevation of 6,994 feet, Park County receives approximately 22.2 inches of rainfall annually with predominantly loam soil. Summer highs average 80°F, so choose short-season varieties of Green Beans to ensure they mature before fall.
Park County Soil Profile
Soil Type
Loam
Soil pH
6.5-7.6
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
Water stress score is 8/10 — consider drought-tolerant varieties and mulching
Green Beans Planting Timeline — Park County, MT
Green Beans Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | June 7 | Jun 7 – Jun 28 |
| Harvest | August 2 | Aug 2 – Sep 27 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | — |
| 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
50–65 days
Soil pH
6 – 7
USDA Zone
Zone 4b
Growing Season
119 days
Growing Tips for Park County
Direct sow after last frost when soil is warm. Provide sturdy supports for pole varieties. Pick beans regularly when young and tender to encourage continued production.
Companion Planting
Good Companions
Avoid Planting Near
Level Up Your Garden
Avoid harvesting during damp weather. Isolate 25 ft between varieties.
Green Beans in Other Locations
Frequently Asked Questions
When should I plant Green Beans in Park County, MT?
Park County is in Zone 4b with an average last frost of May 24. Plan your Green Beans planting based on this frost date — see the calendar above for exact timing.
What planting zone is Park County, MT?
Park County, Montana is in USDA Hardiness Zone 4b. The average last spring frost is May 24 and first fall frost is September 20.
Plan Your Garden with Confidence
Get our free Garden Planner — designed to help Park County gardeners in Zone 4b organize planting dates, track what's growing, and never miss a planting window.
Get Your Free Garden Planner →Free download. Plan your entire garden season in minutes.