Quick Facts
USDA Zones
7a-8b
Last Frost
Mar 20 - Apr 15
First Frost
Oct 15 - Nov 5
County Area
454K acres
Hardiness Zone Range
Growing Season
What Grows in Oklahoma County
Plants suited to Oklahoma's climate and zones 7a-8b.
Growing Challenges in Oklahoma
Extreme weather variability (tornadoes, ice storms, drought)
Red clay soils drain poorly in central OK
Low western rainfall requires irrigation
Environmental Intelligence
Understanding what's nearby helps you make informed decisions about where and how to grow.
Total Sites
4,226
Risk Level
High
Primary Concern
23 Superfund NPL sites
Sources Checked
Severity Distribution
Highest-Severity Sites
BACHMAN SERVICES FIRE
Superfund · SUPERFUND (NON-NPL)
BETHANY
PFAS Sampling · PFAS Detected
CHOCTAW
PFAS Sampling · PFAS Detected
DEER CREEK RURAL WATER CORP
PFAS Sampling · PFAS Detected
DEL CITY
PFAS Sampling · PFAS Detected
Know Before You Grow
- •Underground tanks can leak petroleum products. Soil testing near former gas stations is recommended.
- •Raised beds with imported soil can reduce exposure risk near brownfield sites.
- •Test well water for nitrates if you rely on a private well. Levels above 10 mg/L require treatment.
Check your specific parcel in Oklahoma County
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,112 plant recommendations.
25+ data sources analyzed in seconds
Your Specific Parcel Matters
Oklahoma County Average
- ●USDA Zones 7a-8b
- ●Generic soil type for the area
- ●State-average frost dates
YOUR Parcel
- ✓Your exact hardiness zone
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure from LiDAR
See MY Growing Report
Read your parcel in Oklahoma County
Pull a site-specific report for your exact address in Oklahoma County, Oklahoma — soil, sun, drainage, frost risk, and scored plant recommendations.
25+ data sources analyzed in seconds
Key Growing Facts for Oklahoma County, Oklahoma
- USDA Hardiness Zones: 7a-8b (USDA PHZM 2023)
- Last Spring Frost: Mar 20 - Apr 15 (NOAA 30-Year Climate Normals)
- First Fall Frost: Oct 15 - Nov 5 (NOAA 30-Year Climate Normals)
- County Land Area: 454K acres (US Census TIGER 2025)
- FIPS Code: 40109
Zone data: USDA ARS Plant Hardiness Zone Map 2023. Climate data: NOAA NCEI. County boundaries: US Census TIGER/Line 2025.
Frequently Asked Questions
What hardiness zone is Oklahoma County, Oklahoma?
Oklahoma County spans USDA hardiness zones 7a-8b, according to the USDA Agricultural Research Service Plant Hardiness Zone Map 2023. Zones are based on average annual extreme minimum temperatures from 1991-2020 weather data.
What vegetables grow in Oklahoma County?
Oklahoma County's zones 7a-8b support a range of vegetables. Common options for Oklahoma include Pecan, Tomato, Okra, Redbud, Blackberry. For site-specific recommendations scored against your parcel's soil, drainage, and sun data, use the Growable Ground report for your address.
What is the growing season in Oklahoma County?
The growing season in Oklahoma County follows Oklahoma's frost window: last spring frost around Mar 20 - Apr 15 and first fall frost around Oct 15 - Nov 5, based on NOAA 30-year climate normals (1991-2020). Frost dates vary by elevation and microclimate within the county.