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When to Plant Lima Beans in Randolph County, NC

Randolph County, North Carolina Zone 8a May

Your May game plan for Randolph County, North Carolina

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Randolph County, North Carolina.

Avg. last frost April 7
Avg. first frost October 29
Soil temp (4") 70°F
Watering Low
Pest pressure Moderate
Daylight 13.9 hrs
A few tasks this May that'll pay off in June
  • First harvests: lima beans

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Lima beans are a warm-season legume producing large, creamy beans with a buttery texture. Both bush and pole varieties are available, with pole types yielding more.

Randolph County, North Carolina is in USDA Zone 8a. The average last spring frost is April 7 and the first fall frost is October 29, giving you a growing season of approximately 205 days.

At an elevation of 792 feet, Randolph County receives approximately 47.1 inches of rainfall annually with predominantly clay loam soil. Summer highs average 91°F, providing good warmth for Lima Beans during the growing season. Clay soil retains moisture well for Lima Beans, but amend with compost to improve drainage and prevent root rot.

Randolph County, NC (Zone 8a) Long season
205 days
Last Spring Frost April 7
205 growing days
First Fall Frost October 29
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Randolph County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (102 days to spare)
Transplant: Mar 30 🍅 Harvest: Jun 1 – Jul 13
Recommended (50%) ✓ Fits season (100 days to spare)
Transplant: Apr 7 🍅 Harvest: Jun 9 – Jul 21
Safe Start (90%) ✓ Fits season (96 days to spare)
Transplant: Apr 23 🍅 Harvest: Jun 25 – Aug 6

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 Randolph County

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

Soil pH

Your soil pH (5.6–6.5) overlaps with Lima Beans's range (6.0–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.6%). Annual compost additions will help Lima Beans.

How to Plant Lima Beans

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

Succession Planting Lima Beans

4
successive plantings in your 205-day season

Sow every 6.9 weeks. Last sowing by Jul 31 to harvest before frost.

Plant Water Budget

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

Monthly Watering Guide for Lima Beans

Lima Beans needs approximately 0.9 inches of water per week (3.9" per month). Here's how your county's rainfall compares month by month.

Month Lima Beans Needs Rainfall You Supplement Action
Jan 4.1" 0" ❄️ Dormant
Feb 3.7" 0" ❄️ Dormant
Mar 3.7" 0" ❄️ Dormant
Apr 3.9" 3.2" 0.7" 💧 Light watering
May 3.9" 4.2" 0" ✅ Rainfall sufficient
Jun 3.9" 3.9" 0" ✅ Rainfall sufficient
Jul 3.9" 5.2" 0" ✅ Rainfall sufficient
Aug 3.9" 4.7" 0" ✅ Rainfall sufficient
Sep 3.9" 3.5" 0.4" 💧 Light watering
Oct 3.9" 3" 0.9" 💧 Light watering
Nov 3.7" 0" ❄️ Dormant
Dec 4" 0" ❄️ Dormant

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

Lima 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.

Lima Beans needs ~1,369 GDD — county provides 3,741 GDD Excellent fit

Lima Beans Planting Timeline — Randolph County, NC

Lima Beans Planting Calendar

Activity When Date Range
Direct Sow April 14 Apr 14 – May 5
Harvest June 16 Jun 16 – Jul 28

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 8a

📆 Growing Season

205 days in Randolph County

Growing Tips for Lima Beans in Randolph County

Direct sow Lima Beans outdoors after April 07 in Randolph County when soil has warmed and frost danger has passed.

With Randolph County's clay soil (31% clay), work in 3-4 inches of compost before planting Lima Beans. Avoid tilling when soil is wet to prevent compaction.

Common pests for Lima 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 thoroughly warm at 65F or above. Do not soak seeds before planting as they may crack. Harvest when pods are plump but still green for fresh limas.

Companion Planting

Good Companions

Avoid Planting Near

  • Onion
  • Garlic
  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Lima Beans in Randolph County, NC?

Randolph County is in Zone 8a with an average last frost of April 7. Plan your Lima Beans planting based on this frost date — see the calendar above for exact timing.

What planting zone is Randolph County, NC?

Randolph County, North Carolina is in USDA Hardiness Zone 8a. The average last spring frost is April 7 and first fall frost is October 29.

🌱

Your Randolph County Garden Planner — Free

A 24-page printable planner built for Randolph 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.

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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 Randolph County, NC. 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.