When to Plant Kidney Beans in Grant County, NM
What to do in May
Your garden in Grant County, New Mexico is working on a schedule, even when you're not. Here's where you should be this May.
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Put kidney beans seeds straight in the ground
Sow every 2 weeks for a continuous harvest. A single big planting means a single big glut.
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.
Grant County, New Mexico is in USDA Zone 7b. The average last spring frost is April 27 and the first fall frost is October 22, giving you a growing season of approximately 178 days.
At an elevation of 3,721 feet, Grant County receives approximately 15.8 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 92°F, providing good warmth for Kidney Beans during the growing season. Sandy soil warms quickly in spring — great for early planting — but Kidney Beans will need more frequent watering and organic matter to retain nutrients. With low rainfall, drip irrigation is essential for growing Kidney Beans successfully. Mulch heavily to conserve soil moisture.
Grant County Soil Profile
Soil Type
Sandy Loam
Soil pH
6.9-8.2
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.
Soil Compatibility in Grant County
How your county's soil matches Kidney Beans's growing requirements.
Soil pH
Your soil pH (6.9–8.2) is more alkaline than Kidney Beans prefers (6.0–7.5). Add sulfur or peat moss to lower pH.
Soil Texture
Sandy soil in Grant County warms quickly in spring but drains fast. Kidney Beans will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Drainage is adequate for Kidney Beans.
Organic Matter
Organic matter is low (0.8%). Add 2-3 inches of compost before planting Kidney Beans.
How to Plant Kidney Beans
Plant Water Budget
Water stress score is 10/10 — 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" | 0" | ❄️ Dormant |
| Feb | — | 0.9" | 0" | ❄️ Dormant |
| Mar | — | 0.8" | 0" | ❄️ Dormant |
| Apr | 4.3" | 0.5" | 3.8" | 🚿 Regular watering |
| May | 4.3" | 0.3" | 4" | 🚿 Regular watering |
| Jun | 4.3" | 0.6" | 3.7" | 🚿 Regular watering |
| Jul | 4.3" | 2.8" | 1.5" | 💧 Light watering |
| Aug | 4.3" | 2.8" | 1.5" | 💧 Light watering |
| Sep | 4.3" | 2.4" | 1.9" | 💧 Light watering |
| Oct | 4.3" | 1.6" | 2.7" | 🚿 Regular watering |
| Nov | — | 0.9" | 0" | ❄️ Dormant |
| Dec | — | 1.1" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Apr–Oct in Grant 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 — Grant County, NM
Kidney Beans Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Direct Sow | May 4 | May 4 – May 25 |
| Harvest | August 3 | Aug 3 – Sep 7 |
Plant 1" deep · 15" apart · Rows 24" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | — |
| April | — |
| May | Direct Sow |
| June | — |
| July | — |
| August | Harvest |
| September | Harvest |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1"/week · 2-3 times/week
📅 Days to Maturity
85–110 days
🧪 Soil pH
Needs 6–7.5 · Your soil: too_alkaline
🗺️ USDA Zone
Zone 7b
📆 Growing Season
178 days in Grant County
Growing Tips for Kidney Beans in Grant County
Direct sow Kidney Beans outdoors after April 27 in Grant County when soil has warmed and frost danger has passed.
Sandy soil in Grant County dries quickly — mulch Kidney Beans with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
Common pests for Kidney Beans in this region include bean beetles and aphids. Use row covers early in the season and inspect plants weekly.
Grant 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 Grant County, NM?
Grant County is in Zone 7b with an average last frost of April 27. Plan your Kidney Beans planting based on this frost date — see the calendar above for exact timing.
What planting zone is Grant County, NM?
Grant County, New Mexico is in USDA Hardiness Zone 7b. The average last spring frost is April 27 and first fall frost is October 22.
Your Grant County Garden Planner — Free
A 24-page printable planner built for Grant County (Zone 7b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.