Blog

When to Plant Yard Long Beans in DeKalb County, AL

DeKalb County, Alabama Zone 8a May

May in the garden — DeKalb County, Alabama

We've pulled the most time-sensitive tasks for DeKalb County, Alabama this May and put them front and centre. Tackle them in order.

Avg. last frost April 1
Avg. first frost October 31
Soil temp (4") 68°F
Watering Low
Pest pressure Moderate
Daylight 13.8 hrs
  1. Sow yard long beans in trays indoors

    You're about 26 weeks out from your last frost — the perfect window to get these germinating indoors.

Looking ahead to June
  • First harvests: yard long beans

Instant PDF download. No spam, unsubscribe any time.

Yard long beans are a tropical legume that produces slender pods up to 24 inches long. They are a staple in Southeast Asian cooking and thrive in hot weather.

DeKalb County, Alabama is in USDA Zone 8a. The average last spring frost is April 1 and the first fall frost is October 31, giving you a growing season of approximately 213 days.

At an elevation of 393 feet, DeKalb County receives approximately 56.2 inches of rainfall annually with predominantly clay loam soil. Summer highs average 91°F, providing good warmth for Yard Long Beans during the growing season. Clay soil retains moisture well for Yard Long Beans, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Yard Long Beans root diseases.

DeKalb County, AL (Zone 8a) Long season
213 days
Last Spring Frost April 1
213 growing days
First Fall Frost October 31

DeKalb County Soil Profile

Soil Type

Clay Loam

Soil pH

5.5-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (100 days to spare)
Start indoors: Feb 5 Transplant: Apr 9 🍅 Harvest: Jun 4 – Jul 16
Recommended (50%) ✓ Fits season (101 days to spare)
Start indoors: Feb 11 Transplant: Apr 15 🍅 Harvest: Jun 10 – Jul 22
Safe Start (90%) ✓ Fits season (98 days to spare)
Start indoors: Feb 28 Transplant: May 2 🍅 Harvest: Jun 27 – Aug 8

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 DeKalb County

How your county's soil matches Yard Long Beans's growing requirements.

Soil pH

Your soil pH (5.5–6.8) overlaps with Yard Long Beans's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.2%). Annual compost additions will help Yard Long Beans.

How to Plant Yard Long Beans

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

Succession Planting Yard Long Beans

4
successive plantings in your 213-day season

Sow every 6.3 weeks. Last sowing by Aug 12 to harvest before frost.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.1″/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 Yard Long Beans

Yard Long 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 Yard Long Beans Needs Rainfall You Supplement Action
Jan 4.7" 0" ❄️ Dormant
Feb 4.1" 0" ❄️ Dormant
Mar 5.9" 0" ❄️ Dormant
Apr 4.3" 4" 0.3" 💧 Light watering
May 4.3" 4.3" 0" ✅ Rainfall sufficient
Jun 4.3" 5.8" 0" ✅ Rainfall sufficient
Jul 4.3" 5.8" 0" ✅ Rainfall sufficient
Aug 4.3" 5" 0" ✅ Rainfall sufficient
Sep 4.3" 3.7" 0.6" 💧 Light watering
Oct 4.3" 3.2" 1.1" 💧 Light watering
Nov 4.6" 0" ❄️ Dormant
Dec 5" 0" ❄️ Dormant

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

Yard Long 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.

Yard Long Beans needs ~1,232 GDD — county provides 3,887 GDD Excellent fit

Yard Long Beans Planting Timeline — DeKalb County, AL

Yard Long Beans Planting Calendar

Activity When Date Range
Start Indoors February 11 Feb 11 – Feb 25
Transplant Outdoors April 15 Apr 15 – Apr 29
Direct Sow April 8 Apr 8 – Apr 29
Harvest June 10 Jun 10 – Jul 22

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

Month-by-Month Timeline

MonthActivities
January
February Start Indoors
March
April Transplant Outdoors Direct Sow
May
June Harvest
July Harvest
August
September
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Natural rainfall sufficient

📅 Days to Maturity

55–80 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

213 days in DeKalb County

Growing Tips for Yard Long Beans in DeKalb County

Direct sow Yard Long Beans outdoors after April 01 in DeKalb County when soil has warmed and frost danger has passed.

With DeKalb County's clay soil (28% clay), work in 3-4 inches of compost before planting Yard Long Beans. Avoid tilling when soil is wet to prevent compaction.

Common pests for Yard Long 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 soil is warm. Provide tall poles or trellising as vines can reach 8-10 feet. Harvest when pods are pencil-thick before seeds bulge. Cook quickly for best texture.

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 Yard Long Beans in DeKalb County, AL?

DeKalb County is in Zone 8a with an average last frost of April 1. Plan your Yard Long Beans planting based on this frost date — see the calendar above for exact timing.

What planting zone is DeKalb County, AL?

DeKalb County, Alabama is in USDA Hardiness Zone 8a. The average last spring frost is April 1 and first fall frost is October 31.

🌱

Your DeKalb County Garden Planner — Free

A 24-page printable planner built for DeKalb County (Zone 8a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for DeKalb County, AL. 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.