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When to Plant Yard Long Beans in Glynn County, GA

Glynn County, Georgia Zone 9a May

Glynn County, Georgia gardeners: here's your May plan

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

Avg. last frost February 9
Avg. first frost December 13
Soil temp (4") 75°F
Watering Low
Pest pressure High
Daylight 13.6 hrs
  1. It's harvest week for yard long beans

    Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.

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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.

Glynn County, Georgia is in USDA Zone 9a. The average last spring frost is February 9 and the first fall frost is December 13, giving you a growing season of approximately 307 days.

At an elevation of 135 feet, Glynn County receives approximately 55.3 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 97°F, so Yard Long Beans may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Yard Long Beans will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Yard Long Beans root diseases.

Glynn County, GA (Zone 9a) Year-round
307 days
Last Spring Frost February 9
307 growing days
First Fall Frost December 13

Glynn County Soil Profile

Soil Type

Sandy Loam

Soil pH

4.9-6.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (207 days to spare)
Start indoors: Dec 16 Transplant: Feb 3 🍅 Harvest: Mar 31 – May 12
Recommended (50%) ✓ Fits season (202 days to spare)
Start indoors: Dec 29 Transplant: Feb 16 🍅 Harvest: Apr 13 – May 25
Safe Start (90%) ✓ Fits season (186 days to spare)
Start indoors: Jan 26 Transplant: Mar 16 🍅 Harvest: May 11 – Jun 22

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 Glynn County

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

Soil pH

Your soil pH (4.9–6.2) is more acidic than Yard Long Beans prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Yard Long Beans.

Organic Matter

Organic matter is low (1.8%). Add 2-3 inches of compost before planting Yard Long Beans.

How to Plant Yard Long Beans

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

Succession Planting Yard Long Beans

6
successive plantings in your 307-day season

Sow every 6.3 weeks. Last sowing by Sep 24 to harvest before frost.

Plant Water Budget

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

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 4.4" 0" ❄️ Dormant
Feb 4.3" 3.9" 0.4" 💧 Light watering
Mar 4.3" 4.6" 0" ✅ Rainfall sufficient
Apr 4.3" 4.7" 0" ✅ Rainfall sufficient
May 4.3" 3.9" 0.4" 💧 Light watering
Jun 4.3" 5.5" 0" ✅ Rainfall sufficient
Jul 4.3" 5.2" 0" ✅ Rainfall sufficient
Aug 4.3" 5.8" 0" ✅ Rainfall sufficient
Sep 4.3" 4.8" 0" ✅ Rainfall sufficient
Oct 4.3" 3.6" 0.7" 💧 Light watering
Nov 4.3" 4.2" 0.1" 💧 Light watering
Dec 4.3" 4.7" 0" ✅ Rainfall sufficient

Water needs are for active growing months only (Feb–Dec in Glynn 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 ~1,536 GDD — county provides 7,007 GDD Excellent fit

Yard Long Beans Planting Timeline — Glynn County, GA

Yard Long Beans Planting Calendar

Activity When Date Range
Start Indoors December 29 Dec 29 – Jan 12
Transplant Outdoors February 16 Feb 16 – Mar 2
Direct Sow February 9 Feb 9 – Mar 2
Harvest April 13 Apr 13 – May 25

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

Month-by-Month Timeline

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

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: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

307 days in Glynn County

Growing Tips for Yard Long Beans in Glynn County

Direct sow Yard Long Beans outdoors after February 09 in Glynn County when soil has warmed and frost danger has passed.

Sandy soil in Glynn County dries quickly — mulch Yard Long Beans with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 97°F in Glynn County, provide afternoon shade for Yard Long Beans and water deeply in the morning.

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 Glynn County, GA?

Glynn County is in Zone 9a with an average last frost of February 9. Plan your Yard Long Beans planting based on this frost date — see the calendar above for exact timing.

What planting zone is Glynn County, GA?

Glynn County, Georgia is in USDA Hardiness Zone 9a. The average last spring frost is February 9 and first fall frost is December 13.

🌱

Your Glynn County Garden Planner — Free

A 24-page printable planner built for Glynn County (Zone 9a). 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 Glynn County, GA. 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.