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When to plant Black Beans in Rockdale County County,

Plant Black Beans in Rockdale County County after March 22; the prime window is March 29–April 19.

When to Plant Black Beans in Rockdale County, GA

Rockdale County, Georgia Zone 8b June

June in the garden — Rockdale County, Georgia

June is a pivotal month for Rockdale County, Georgia gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost March 22
Avg. first frost November 13
Soil temp (4") 80°F
Watering Low
Pest pressure High
Daylight 14.2 hrs
  1. Collect black beans at their peak

    Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.

To set up a strong July, finish these tasks
  • First harvests: black beans

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Black beans are a warm-season legume producing small, dark, protein-rich beans that are a staple in Latin American and Caribbean cuisines.

Rockdale County, Georgia is in USDA Zone 8b. The average last spring frost is March 22 and the first fall frost is November 13, giving you a growing season of approximately 236 days.

At an elevation of 162 feet, Rockdale County receives approximately 51.5 inches of rainfall annually with predominantly clay loam soil. Summer highs average 92°F, providing good warmth for Black Beans during the growing season. Clay soil retains moisture well for Black Beans, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Black Beans root diseases.

Rockdale County, GA (Zone 8b) Long season
236 days
Last Spring Frost March 22
236 growing days
First Fall Frost November 13
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Rockdale County Soil Profile

Soil Type

Clay Loam

Soil pH

5.3-6.2

Drainage

Well Drained

Black Beans Planting Risk Windows

Early Start (70% safe) ✓ Fits season (98 days to spare)
Transplant: Mar 11 🍅 Harvest: Jun 10 – Jul 29
Recommended (50%) ✓ Fits season (96 days to spare)
Transplant: Mar 22 🍅 Harvest: Jun 21 – Aug 9
Safe Start (90%) ✓ Fits season (94 days to spare)
Transplant: Apr 10 🍅 Harvest: Jul 10 – Aug 28

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 Rockdale County

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

Soil pH

Your soil pH (5.3–6.2) is more acidic than Black Beans prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

The clay loam soil in Rockdale County is excellent for Black Beans — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.7%). Annual compost additions will help Black Beans.

How to Plant Black Beans

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

Black Beans Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 210 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Black Beans

Black 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 Black Beans Needs Rainfall You Supplement Action
Jan 3.8" 0" ❄️ Dormant
Feb 3.6" 0" ❄️ Dormant
Mar 4.3" 5.3" 0" ✅ Rainfall sufficient
Apr 4.3" 3.8" 0.5" 💧 Light watering
May 4.3" 4.5" 0" ✅ Rainfall sufficient
Jun 4.3" 5.3" 0" ✅ Rainfall sufficient
Jul 4.3" 5.6" 0" ✅ Rainfall sufficient
Aug 4.3" 4.3" 0" ✅ Rainfall sufficient
Sep 4.3" 4.3" 0" ✅ Rainfall sufficient
Oct 4.3" 3.6" 0.7" 💧 Light watering
Nov 4.3" 3.7" 0.6" 💧 Light watering
Dec 3.7" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Rockdale County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Black 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.

Black Beans needs ~1,995 GDD — county provides 4,484 GDD Excellent fit

Black Beans Planting Timeline — Rockdale County, GA

Black Beans Planting Calendar

Activity When Date Range
Direct Sow March 29 Mar 29 – Apr 19
Harvest June 28 Jun 28 – Aug 16

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 8b

📆 Growing Season

236 days in Rockdale County

Growing Tips for Black Beans in Rockdale County

Direct sow Black Beans outdoors after March 22 in Rockdale County when soil has warmed and frost danger has passed.

With Rockdale County's clay soil (26% clay), work in 3-4 inches of compost before planting Black Beans. Avoid tilling when soil is wet to prevent compaction.

Common pests for Black 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 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

  • Onion
  • Garlic

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Black Beans in Rockdale County, GA?

Rockdale County is in Zone 8b with an average last frost of March 22. Plan your Black Beans planting based on this frost date — see the calendar above for exact timing.

What planting zone is Rockdale County, GA?

Rockdale County, Georgia is in USDA Hardiness Zone 8b. The average last spring frost is March 22 and first fall frost is November 13.

When should I plant Black Beans in Rockdale County County, ?

In Rockdale County County, , plant Black Beans after the last frost (around March 22) and before the first frost (around November 13). Best results when soil holds above 50°F.

What growing zone is Rockdale County County, for Black Beans?

Rockdale County County sits in USDA Zone 8b. Black Beans grows reliably in zones 3a through 11b, so it's a good fit here.

Can Black Beans grow in Rockdale County County's climate?

Yes — Black Beans grows well in Rockdale County County's temperate climate. Rockdale County County averages a 236-day frost-free season, with last frost around March 22 and first frost around November 13.

🌱

Your Rockdale County Garden Planner — Free

A 22-page printable planner built for Rockdale County (Zone 8b). 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 Rockdale County, GA. Local conditions may vary. Last updated: June 2026.

Sources & credits

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