Midwest Lawn Mowing Guide
The Midwest is cool-season country. Growth is compressed into spring and fall, summer heat has you raise the deck in Iowa, Missouri and Kansas (Purdue, for Indiana and Illinois, keeps one height all year), and two dates do most of the work: the spring crabgrass pre-emergent (timing by state in the April row below) and the last mow before the ground freezes.
What grass do you have?
- Kentucky Bluegrass (KBG): the classic Midwest lawn; self-repairing, loves sun; without water in summer heat it goes dormant and usually recovers.
- Tall fescue: the most heat- and drought-tolerant cool-season grass; great for low-input lawns.
- Fine fescue: shade and low-input areas.
Mowing heights for Midwest grasses
| Grass | Mowing height | Notes |
|---|---|---|
| Kentucky Bluegrass | Iowa (ISU): 2–3 in. Kansas (K-State): 2–3.5 in. Indiana and Illinois (Purdue): 2–3.5 in. Missouri (MU): 1.5–2.5 in. in spring and fall | Summer: over 3 in. in Iowa, 2–3.5 in. in Missouri, the top of the range in Kansas. Purdue keeps one height all year |
| Tall fescue | Kansas (K-State): 2.5–3.5 in. Indiana and Illinois (Purdue): 2.5–4 in. Missouri (MU): 2–3.5 in. in spring, 2.5–3.5 in. in fall | Summer: the top of the range in Kansas, 3–4 in. in Missouri. Purdue keeps one height all year |
| Fine fescue | Minnesota (UMN): above 2 in., preferably 2.5–4 in. Indiana and Illinois (Purdue): 2–3.5 in. Missouri (MU): 1–2 in. for red and Chewings fescue, 1.5–2.5 in. for hard and sheep fescue, in spring and fall | Tolerates a higher, less-frequent cut. UMN mows shade ½–1 in. higher; MU uses 2–3 in. in summer and in shade |
The single biggest summer mistake here is cutting cool-season grass too short: a taller canopy shades the soil and keeps roots cooler.
Midwest mowing calendar
| Month | Mowing & lawn care |
|---|---|
| Jan | Dormant under snow/cold. No mowing. |
| Feb | Dormant. Service the mower; plan pre-emergent. |
| Mar | Green-up starts late month; have the crabgrass pre-emergent ready for April. |
| Apr | Growth begins; first mows; don’t bag if mulching. Crabgrass pre-emergent: by April 15 in central Missouri (MU); about April 15 in Kansas, before redbuds reach full bloom (K-State); April 15–May 1, or when soil reaches 55°F, in Iowa (ISU); mid-April to mid-May in Minnesota (UMN). |
| May | Peak spring growth: mow weekly, sometimes more. |
| Jun | Strong growth; in Iowa, Missouri and Kansas, begin raising the deck as heat arrives. |
| Jul | Summer heat lull. Mow at your grass’s summer height (table above), less often; water deeply. |
| Aug | Continued heat; hold the high cut. Plan fall overseeding. |
| Sep | Best growing month: overseed, mow weekly, fertilize. |
| Oct | Strong fall growth; in Iowa, Missouri and Kansas, lower the deck toward season’s end. |
| Nov | Take the last mow before the ground freezes, at your grass’s fall height; K-State (Kansas) cuts tall fescue to 2–2.5 in. |
| Dec | Dormant. Rest the mower. |
Mowers & equipment
See our mowing height guide, best lawn mowers, and best self-propelled lawn mowers.
Get the full Midwest plan
Lush Lawns Midwest: region-specific mowing heights, seasonal timing, and lawn care for the Midwest (Kentucky Bluegrass and fescue).
Printable Midwest lawn care calendar and worksheet
Two PDFs to print at home, built from the extension service publications for the Midwest. Each page lists the publications it draws on.
Midwest Lawn Care Bundle: $5.99
The calendar and the worksheet together, $3.49 less than buying both.
Buy the bundle for $5.99Midwest Lawn Care Calendar: $4.49
Find your grass on the first page, then turn to its page for when to mow, water and fertilize, with mowing heights for each grass.
Buy for $4.49Midwest Lawn Planning Worksheet: $4.99
Measure your lawn, record a soil test, work out how much fertilizer to spread, test what your sprinklers put down, and log the season month by month.
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