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When to Plant Lentils in Johnston County, OK

Lentils are an ancient pulse crop producing small, lens-shaped seeds packed with protein and iron. They grow on short, bushy plants and are surprisingly easy to cultivate.

Johnston County, Oklahoma is in USDA Zone 7b. The average last spring frost is March 25 and the first fall frost is November 11, giving you a growing season of approximately 231 days.

At an elevation of 700 feet, Johnston County receives approximately 32.9 inches of rainfall annually with predominantly loam soil. Summer highs average 92Β°F, providing good warmth for Lentils during the growing season.

Johnston County, OK (Zone 7b) Long season
231 days
Last Spring Frost March 25
231 growing days
First Fall Frost November 11

Johnston County Soil Profile

Soil Type

Loam

Soil pH

6.3-7.3

Drainage

Well Drained

Monthly Watering Guide for Lentils

Lentils needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Lentils Needs Rainfall You Supplement Action
Jan β€” 0.8" 0" ❄️ Dormant
Feb β€” 1" 0" ❄️ Dormant
Mar 4.3" 2.3" 2" πŸ’§ Light watering
Apr 4.3" 3.4" 0.9" πŸ’§ Light watering
May 4.3" 5.1" 0" βœ… Rainfall sufficient
Jun 4.3" 5.2" 0" βœ… Rainfall sufficient
Jul 4.3" 3.8" 0.5" πŸ’§ Light watering
Aug 4.3" 3.7" 0.6" πŸ’§ Light watering
Sep 4.3" 3.7" 0.6" πŸ’§ Light watering
Oct 4.3" 2.1" 2.2" 🚿 Regular watering
Nov 4.3" 1" 3.3" 🚿 Regular watering
Dec β€” 0.8" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Johnston County). Supplement amounts are based on average rainfall β€” actual needs vary with temperature, soil, and mulching.

Lentils Planting Timeline β€” Johnston County, OK

Lentils Planting Calendar

Activity When Date Range
Start Indoors February 18 Feb 18 – Mar 4
Transplant Outdoors March 25 Mar 25 – Apr 8
Direct Sow March 11 Mar 11 – Apr 1
Harvest June 17 Jun 17 – Jul 29
Fall Sowing September 2 Sep 2 – Sep 16

Plant 0.5" deep Β· 6" apart Β· Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

β˜€οΈ Sun

Full Sun (6-8+ hours)

πŸ’§ Water

Low β€” drought tolerant

πŸ“… Days to Maturity

80–110 days

πŸ§ͺ Soil pH

Needs 6–8 Β· Your soil: N/A

πŸ—ΊοΈ USDA Zone

Zone 7b

πŸ“† Growing Season

231 days in Johnston County

Growing Tips for Johnston County

Direct sow in early spring as lentils tolerate frost. Provide short supports as plants tend to lodge. Harvest when lower pods turn brown. Pull entire plants and dry in bundles.

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 Lentils in Johnston County, OK?

Johnston County is in Zone 7b with an average last frost of March 25. Plan your Lentils planting based on this frost date β€” see the calendar above for exact timing.

What planting zone is Johnston County, OK?

Johnston County, Oklahoma is in USDA Hardiness Zone 7b. The average last spring frost is March 25 and first fall frost is November 11.

🌱

Plan Your Garden with Confidence

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

Get Your Free Garden Planner →

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