Blog

When to Plant Lima Beans in Washita County, OK

Washita County, Oklahoma Zone 7b May

May in the garden — Washita County, Oklahoma

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

Avg. last frost April 5
Avg. first frost November 3
Soil temp (4") 66°F
Watering Low
Pest pressure Moderate
Daylight 13.9 hrs
Coming up in June — start thinking about
  • First harvests: lima beans

Instant PDF download. No spam, unsubscribe any time.

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.

Washita County, Oklahoma is in USDA Zone 7b. The average last spring frost is April 5 and the first fall frost is November 3, giving you a growing season of approximately 212 days.

At an elevation of 883 feet, Washita County receives approximately 33.8 inches of rainfall annually with predominantly loam soil. Summer highs average 94°F, providing good warmth for Lima Beans during the growing season.

Washita County, OK (Zone 7b) Long season
212 days
Last Spring Frost April 5
212 growing days
First Fall Frost November 3
Share this guide:

Washita County Soil Profile

Soil Type

Loam

Soil pH

6.7-7.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (106 days to spare)
Transplant: Mar 28 🍅 Harvest: May 30 – Jul 11
Recommended (50%) ✓ Fits season (107 days to spare)
Transplant: Apr 5 🍅 Harvest: Jun 7 – Jul 19
Safe Start (90%) ✓ Fits season (112 days to spare)
Transplant: Apr 15 🍅 Harvest: Jun 17 – Jul 29

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 Washita County

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

Soil pH

Your soil pH (6.7–7.5) is more alkaline than Lima Beans prefers (6.0–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.6%). 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 212-day season

Sow every 6.9 weeks. Last sowing by Aug 05 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 522 gal / 100 sq ft
Drought risk

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

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 0.9" 0" ❄️ Dormant
Feb 1.1" 0" ❄️ Dormant
Mar 2.1" 0" ❄️ Dormant
Apr 3.9" 3.9" 0" ✅ Rainfall sufficient
May 3.9" 4.4" 0" ✅ Rainfall sufficient
Jun 3.9" 5.2" 0" ✅ Rainfall sufficient
Jul 3.9" 4.9" 0" ✅ Rainfall sufficient
Aug 3.9" 4.1" 0" ✅ Rainfall sufficient
Sep 3.9" 3" 0.9" 💧 Light watering
Oct 3.9" 2.1" 1.8" 💧 Light watering
Nov 3.9" 1.3" 2.6" 🚿 Regular watering
Dec 0.8" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Nov in Washita 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 ~1,538 GDD — county provides 4,346 GDD Excellent fit

Lima Beans Planting Timeline — Washita County, OK

Lima Beans Planting Calendar

Activity When Date Range
Direct Sow April 12 Apr 12 – May 3
Harvest June 14 Jun 14 – Jul 26

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
Share this guide:

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · Only during dry spells

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 7b

📆 Growing Season

212 days in Washita County

Growing Tips for Lima Beans in Washita County

Direct sow Lima Beans outdoors after April 05 in Washita 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

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

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

Washita County is in Zone 7b with an average last frost of April 5. Plan your Lima Beans planting based on this frost date — see the calendar above for exact timing.

What planting zone is Washita County, OK?

Washita County, Oklahoma is in USDA Hardiness Zone 7b. The average last spring frost is April 5 and first fall frost is November 3.

🌱

Your Washita County Garden Planner — Free

A 24-page printable planner built for Washita County (Zone 7b). 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 Washita County, OK. 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.