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When to Plant Kidney Beans in Brazoria County, TX

Brazoria County, Texas Zone 9b May

This month in Brazoria County, Texas

Your garden in Brazoria County, Texas is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost February 12
Avg. first frost December 8
Soil temp (4") 78°F
Watering Low
Pest pressure High
Daylight 13.5 hrs
  1. Bring in the kidney beans

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

A few tasks this May that'll pay off in June
  • First harvests: kidney beans

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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.

Brazoria County, Texas is in USDA Zone 9b. The average last spring frost is February 12 and the first fall frost is December 8, giving you a growing season of approximately 299 days.

At an elevation of 348 feet, Brazoria County receives approximately 71.8 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 102°F, so Kidney Beans may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Kidney Beans will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Kidney Beans root diseases.

Brazoria County, TX (Zone 9b) Year-round
299 days
Last Spring Frost February 12
299 growing days
First Fall Frost December 8
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Brazoria County Soil Profile

Soil Type

Sandy Loam

Soil pH

5.5-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (189 days to spare)
Transplant: Jan 22 🍅 Harvest: Apr 23 – May 28
Recommended (50%) ✓ Fits season (173 days to spare)
Transplant: Feb 12 🍅 Harvest: May 14 – Jun 18
Safe Start (90%) ✓ Fits season (164 days to spare)
Transplant: Mar 9 🍅 Harvest: Jun 8 – Jul 13

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 Brazoria County

How your county's soil matches Kidney Beans's growing requirements.

Soil pH

Your soil pH (5.5–6.3) is more acidic than Kidney Beans prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

Sandy soil in Brazoria County warms quickly in spring but drains fast. Kidney Beans will need more frequent watering and regular compost additions to retain nutrients.

Organic Matter

Organic matter is moderate (2.0%). Annual compost additions will help Kidney Beans.

How to Plant Kidney Beans

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — 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 1.7" 0" ❄️ Dormant
Feb 4.3" 2.5" 1.8" 💧 Light watering
Mar 4.3" 4.3" 0" ✅ Rainfall sufficient
Apr 4.3" 8.4" 0" ✅ Rainfall sufficient
May 4.3" 11.2" 0" ✅ Rainfall sufficient
Jun 4.3" 11.3" 0" ✅ Rainfall sufficient
Jul 4.3" 8" 0" ✅ Rainfall sufficient
Aug 4.3" 8.7" 0" ✅ Rainfall sufficient
Sep 4.3" 6.6" 0" ✅ Rainfall sufficient
Oct 4.3" 5.1" 0" ✅ Rainfall sufficient
Nov 4.3" 2.5" 1.8" 💧 Light watering
Dec 4.3" 1.6" 2.7" 🚿 Regular watering

Water needs are for active growing months only (Feb–Dec in Brazoria 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 needs ~2,584 GDD — county provides 7,950 GDD Excellent fit

Kidney Beans Planting Timeline — Brazoria County, TX

Kidney Beans Planting Calendar

Activity When Date Range
Direct Sow February 19 Feb 19 – Mar 12
Harvest May 21 May 21 – Jun 25

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

Month-by-Month Timeline

MonthActivities
January
February Direct Sow
March Direct Sow
April
May Harvest
June Harvest
July
August
September
October
November
December
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Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

85–110 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9b

📆 Growing Season

299 days in Brazoria County

Growing Tips for Kidney Beans in Brazoria County

Direct sow Kidney Beans outdoors after February 12 in Brazoria County when soil has warmed and frost danger has passed.

Sandy soil in Brazoria 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.

With summer highs reaching 102°F in Brazoria County, provide afternoon shade for Kidney Beans and water deeply in the morning.

Common pests for Kidney Beans in this region include bean beetles and aphids. Use row covers early in the season and inspect plants weekly.

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

  • Onion
  • Garlic

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Kidney Beans in Brazoria County, TX?

Brazoria County is in Zone 9b with an average last frost of February 12. Plan your Kidney Beans planting based on this frost date — see the calendar above for exact timing.

What planting zone is Brazoria County, TX?

Brazoria County, Texas is in USDA Hardiness Zone 9b. The average last spring frost is February 12 and first fall frost is December 8.

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Your Brazoria County Garden Planner — Free

A 24-page printable planner built for Brazoria County (Zone 9b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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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 Brazoria County, TX. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.