What height to mow Kentucky bluegrass in Ohio?
By LawnYear editorial team · Published · Updated Windows are read from the extension publications listed under Sources; the dates are approximate.
The answer
Ohio State University Extension, Lake County (2007) gives 2 to 2.5 in as the mowing height for Kentucky bluegrass in Ohio. The mowing season shown on this site runs from Apr 1 to Nov 30. Bluegrass, perennial ryegrass and fine fescues are mowed at 2 to 2.5 in; never remove more than 1/3 of the blade. A 2025 Ohio State article advises 3 to 4 in.
Full calendar: Ohio lawn care calendar · Kentucky bluegrass in other states · Lawn schedule by ZIP
Approximate dates for your state. Check with your local cooperative extension office before you act.
All Ohio windows for Kentucky bluegrass
The Ohio calendar on this site lists seeding Sep 1 to Sep 15 and Mar 1 to Apr 30, fertilizing Apr 1 to May 31 and Oct 1 to Nov 30, weed control Apr 1 to Apr 25 and mowing Apr 1 to Nov 30 at 2 to 2.5 in for Kentucky bluegrass.
Where the dates come from
Ohio State University Extension, Lake County: F.S. 101, Lawn Care Calendar for Northeastern Ohio (revised 2007); month-by-month, geared to northern Ohio. Read on 2026-10-29. Ohio State University (Buckeye Turf): Early Spring Lawn Care (March 2025); recommends a 3 to 4 inch lawn height. Read on 2026-10-29.
What to check for Ohio
The mowing dates for Kentucky bluegrass above (Apr 1 to Nov 30 at 2 to 2.5 in) apply to Ohio as a whole, so the north and south of the state are not told apart.
Other grasses in Ohio
For perennial ryegrass and fine fescue, the Ohio calendar gives Apr 1 to Nov 30 at 2 to 2.5 in for mowing. For tall fescue, the Ohio calendar gives Apr 1 to Nov 30 at 2.5 to 3 in for mowing.
Mowing Kentucky bluegrass in other states
- Indiana: Apr 1 to Nov 30 at 2.5 to 3.5 in, per Purdue University Cooperative Extension Service (1998).