Oklahoma Lawn Care Calendar

Oklahoma is transition-zone turf country — tall fescue and kentucky bluegrass alongside bermuda and zoysia. Click a city for its full month-by-month calendar.

CityAerate + overseedPre-emergentSeason
Oklahoma City Sep 3 – Sep 18 Mar 14 – Apr 4 212 days
Tulsa Sep 5 – Sep 20 Mar 10 – Mar 31 218 days
🌾 Overseed in OK⛳ Aerate in OK🛡️ Apply Pre-Emergent in OK🧪 Fertilize in OK🧹 Dethatch in OK🍂 Stop Mowing in OK❄️ Winterize in OK

All Oklahoma station records (191)

Every NOAA weather station in Oklahoma with complete 1991–2020 frost normals — pick the one nearest you (similar elevation matters more than plain distance).

Not sure which station to trust? Use the ZIP code lookup for the quick answer, or pick the station whose terrain most resembles your yard.

Lawn timing geography of Oklahoma

Across the 193 Oklahoma locations with complete 1991–2020 frost normals, the average last spring frost — the anchor for pre-emergent and spring work — ranges from Mar 15 (Ardmore) to Apr 26 (Boise City 2 E), a spread of about 6 weeks driven by elevation, latitude, and terrain. The same job can be weeks apart at opposite ends of the state, which is why a state-level date is only a starting point — pick the location nearest your yard and plan from its calendar.

The Oklahoma lawn year in one paragraph

Oklahoma lawns run on two opposite calendars. Tall fescue and bluegrass lawns treat early fall as the main event — aerate, overseed, feed — with spring for pre-emergent and light feeding. Bermuda and Zoysia lawns flip it: establish and feed from late spring through summer, stop nitrogen 6–8 weeks before frost, and accept winter brown as normal. Identify your grass first; every date on this page depends on it. Details by task: when to overseed in Oklahoma, when to aerate in Oklahoma, when to apply crabgrass pre-emergent in Oklahoma, and more above.