Oklahoma Planting Calendar
Frost dates, growing zones, and planting dates for Oklahoma gardeners.
Zone 6b
Zone 7a
Zone 7b
The Short Answer
Oklahoma spans USDA zones 6b through 7b, which means planting dates vary significantly across the state. Northern Oklahoma has an average last frost around Apr 5 - Apr 20, while Southern Oklahoma sees its last frost around Mar 15 - Apr 1. Use our homepage tool with your zip code for dates specific to your exact location.
Oklahoma Frost Dates by Region
Hot summers. Severe thunderstorms and tornado risk. Good growing season length. Windy — windbreaks help gardens.
| Region | Zones | Last Frost (Spring) | First Frost (Fall) |
|---|---|---|---|
| Northern Oklahoma | 6b, 7a | Apr 5 - Apr 20 | Oct 15 - Nov 1 |
| Central Oklahoma | 7a, 7b | Mar 25 - Apr 10 | Oct 25 - Nov 10 |
| Southern Oklahoma | 7b | Mar 15 - Apr 1 | Nov 1 - Nov 15 |
Soil & Growing Conditions
Red clay soils common. Alkaline in west. Rich prairie soils in east. Wind erosion in western panhandle.
What to Plant in Oklahoma
Oklahoma's long season gives you two planting windows and room for crops that colder states can't grow. The key is timing around your summer heat peak:
Heat Lovers (Oklahoma's Advantage)
Spring & Fall Crops
TomatoesCucumbersBeans (Green/Snap)Squash (Summer)Corn (Sweet)BasilGarlicLettuceBroccoliCarrotsKalePeas
Flowers & Perennials
Browse all 100 plants — or enter your zip code for personalized planting dates.
Neighboring States
Gardeners near state borders may find useful information in neighboring state guides:
Alabama
Alaska
Arizona
Arkansas
California
Colorado
Connecticut
Delaware
Florida
Georgia
Hawaii
Idaho
Illinois
Indiana
Iowa
Kansas
Kentucky
Louisiana
Maine
Maryland
Massachusetts
Michigan
Minnesota
Mississippi
Missouri
Montana
Nebraska
Nevada
New Hampshire
New Jersey
New Mexico
New York
North Carolina
North Dakota
Ohio
Oregon
Pennsylvania
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Utah
Vermont
Virginia
Washington
West Virginia
Wisconsin
Wyoming
Last reviewed: March 29, 2026