When to plant Kidney Beans in Sanders County County,
Plant Kidney Beans in Sanders County County, between May 31 and June 21 — the only viable window. Zone 6a's short season (112 frost-free days) rules out a fall crop.
When to Plant Kidney Beans in Sanders County, MT
June to-do list for Sanders County, Montana
We've pulled the most time-sensitive tasks for Sanders County, Montana this June and put them front and centre. Tackle them in order.
Kidney beans are a popular dry bean variety named for their shape, available in red and white types. They are the classic bean for chili and red beans and rice.
Sanders County, Montana is in USDA Zone 6a. The average last spring frost is May 24 and the first fall frost is September 13, giving you a growing season of approximately 112 days.
At an elevation of 5,775 feet, Sanders County receives approximately 16.4 inches of rainfall annually with predominantly loam soil. Summer highs average 87°F, providing good warmth for Kidney Beans during the growing season. With low rainfall, drip irrigation is essential for growing Kidney Beans successfully. Mulch heavily to conserve soil moisture.
Sanders County Soil Profile
Soil Type
Loam
Soil pH
6.3-7.9
Drainage
Well Drained
Kidney Beans 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.
Soil Compatibility in Sanders County
How your county's soil matches Kidney Beans's growing requirements.
Soil pH
Your soil pH (6.3–7.9) overlaps with Kidney Beans's range (6.0–7.5), though not a perfect match.
Soil Texture
The loam soil in Sanders County is excellent for Kidney Beans — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.7%). Annual compost additions will help Kidney Beans.
How to Plant Kidney Beans
Kidney Beans Water Budget
Water stress score is 8/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Kidney Beans
Kidney Beans needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | Kidney Beans Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.1" | 0" | ❄️ Dormant |
| Feb | — | 1" | 0" | ❄️ Dormant |
| Mar | — | 1.3" | 0" | ❄️ Dormant |
| Apr | — | 1.7" | 0" | ❄️ Dormant |
| May | 4.3" | 1.8" | 2.5" | 🚿 Regular watering |
| Jun | 4.3" | 1.3" | 3" | 🚿 Regular watering |
| Jul | 4.3" | 1.5" | 2.8" | 🚿 Regular watering |
| Aug | 4.3" | 1.7" | 2.6" | 🚿 Regular watering |
| Sep | 4.3" | 1.4" | 2.9" | 🚿 Regular watering |
| Oct | — | 1.4" | 0" | ❄️ Dormant |
| Nov | — | 1.2" | 0" | ❄️ Dormant |
| Dec | — | 1" | 0" | ❄️ Dormant |
Water needs are for active growing months only (May–Sep in Sanders County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Kidney Beans Heat Requirements (GDD)
What are Growing Degree Days (GDD)?
Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.
Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.
Kidney Beans Planting Timeline — Sanders County, MT
Kidney Beans Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | May 31 | May 31 – Jun 21 |
| Harvest | August 30 | Aug 30 – Oct 4 |
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 | Harvest |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1"/week · 1-2 times/week
📅 Days to Maturity
85–110 days
🧪 Soil pH
Needs 6–7.5 · Your soil: acceptable
🗺️ USDA Zone
Zone 6a
📆 Growing Season
112 days in Sanders County
Growing Tips for Kidney Beans in Sanders County
Direct sow Kidney Beans outdoors after May 24 in Sanders County when soil has warmed and frost danger has passed.
Your 112.0-day growing season in Sanders County is tight for Kidney Beans (85.0-110.0 days to maturity). Start indoors and choose early-maturing varieties.
Common pests for Kidney Beans in this region include bean beetles and aphids. Use row covers early in the season and inspect plants weekly.
Sanders County receives only 16" of rain annually. Kidney Beans needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.
General growing tips
Direct sow after frost. Allow pods to dry completely on the plant. Kidney beans must be thoroughly cooked as raw or undercooked beans contain harmful lectins.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Kidney Beans in Other Locations
Frequently Asked Questions
When should I plant Kidney Beans in Sanders County, MT?
Sanders County is in Zone 6a with an average last frost of May 24. Plan your Kidney Beans planting based on this frost date — see the calendar above for exact timing.
What planting zone is Sanders County, MT?
Sanders County, Montana is in USDA Hardiness Zone 6a. The average last spring frost is May 24 and first fall frost is September 13.
When should I plant Kidney Beans in Sanders County County, ?
In Sanders County County, , plant Kidney Beans after the last frost (around May 24) and before the first frost (around September 13). Best results when soil holds above 50°F.
What growing zone is Sanders County County, for Kidney Beans?
Sanders County County sits in USDA Zone 6a. Kidney Beans grows reliably in zones 3a through 11b, so it's a good fit here.
Can Kidney Beans grow in Sanders County County's climate?
Yes — Kidney Beans grows well in Sanders County County's temperate climate. Sanders County County averages a 112-day frost-free season, with last frost around May 24 and first frost around September 13.
Your Sanders County Garden Planner — Free
A 22-page printable planner built for Sanders County (Zone 6a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.