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When to Plant Lima Beans in Pittsburg County, OK

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.

Pittsburg County, Oklahoma is in USDA Zone 7a. The average last spring frost is April 4 and the first fall frost is November 1, giving you a growing season of approximately 211 days.

At an elevation of 620 feet, Pittsburg County receives approximately 32.6 inches of rainfall annually with predominantly loam soil. Summer highs average 90ยฐF, providing good warmth for Lima Beans during the growing season.

Pittsburg County, OK (Zone 7a) Long season
211 days
Last Spring Frost April 4
211 growing days
First Fall Frost November 1

Pittsburg County Soil Profile

Soil Type

Loam

Soil pH

6.6-7.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (110 days to spare)
Transplant: Mar 26 🍅 Harvest: May 28 – Jul 9
Recommended (50%) ✓ Fits season (106 days to spare)
Transplant: Apr 4 🍅 Harvest: Jun 6 – Jul 18
Safe Start (90%) ✓ Fits season (114 days to spare)
Transplant: Apr 17 🍅 Harvest: Jun 19 – Jul 31

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 Pittsburg County

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

Soil pH

Your soil pH (6.6โ€“7.2) overlaps with Lima Beans's range (6.0โ€“7.0), though not a perfect match.

Soil Texture

The loam soil in Pittsburg County is excellent for Lima Beans โ€” good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.7%). 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 211-day season

Sow every 6.9 weeks. Last sowing by Aug 03 to harvest before frost.

Plant Water Budget

Plant needs
0.9″/week
Rainfall provides
0.7″/week
You supply
0.3″/week
Watering frequency Only during dry spells
Season total 472 gal / 100 sq ft
Lima Beans needs ~1,312 GDD — county provides 3,692 GDD Excellent fit

Lima Beans Planting Timeline โ€” Pittsburg County, OK

Lima Beans Planting Calendar

Activity When Date Range
Direct Sow April 11 Apr 11 โ€“ May 2
Harvest June 13 Jun 13 โ€“ Jul 25

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

Month-by-Month Timeline

MonthActivities
January โ€”
February โ€”
March โ€”
April Direct Sow
May Direct Sow
June Harvest
July Harvest
August โ€”
September โ€”
October โ€”
November โ€”
December โ€”

Growing Conditions

โ˜€๏ธ Sun

Full Sun (6-8+ hours)

๐Ÿ’ง Water

0.9"/week ยท Only during dry spells

๐Ÿ“… Days to Maturity

60โ€“90 days

๐Ÿงช Soil pH

Needs 6โ€“7 ยท Your soil: acceptable

๐Ÿ—บ๏ธ USDA Zone

Zone 7a

๐Ÿ“† Growing Season

211 days in Pittsburg County

Growing Tips for Lima Beans in Pittsburg County

Direct sow Lima Beans outdoors after April 04 in Pittsburg County when soil has warmed and frost danger has passed.

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

Level Up Your Garden

Frequently Asked Questions

When should I plant Lima Beans in Pittsburg County, OK?

Pittsburg County is in Zone 7a with an average last frost of April 4. Plan your Lima Beans planting based on this frost date โ€” see the calendar above for exact timing.

What planting zone is Pittsburg County, OK?

Pittsburg County, Oklahoma is in USDA Hardiness Zone 7a. The average last spring frost is April 4 and first fall frost is November 1.

๐ŸŒฑ

Plan Your Garden with Confidence

Get our free Garden Planner โ€” designed to help Pittsburg County gardeners in Zone 7a organize planting dates, track what's growing, and never miss a planting window.

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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 Pittsburg County, OK. Local conditions may vary. Last updated: April 2026.