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Mowing heights by grass type

All grass varieties should be mowed at or near their optimal mowing height. This will keep grass healthy and dense (highest number of shoots per unit area). Higher density means more soil surface shading, which severely restricts the germination of many annual grassy and broadleaf weeds. Maintaining a dense and healthy lawn is the best weed control.

Many factors influence the decision as to the proper height for each lawn. First is the predominate turfgrass growing in the lawn. Different grasses are bred to grow best within a certain range, so it's important to know what type of grass you have. Other factors that determine the best height include: mowing frequency, water use and drought resistance, temperature stresses, shade, weeds, insects and diseases. If given a choice, it is better to select the correct mowing at the higher end of the range.

Mowing is an important factor in creating a thick, healthy lawn. However, when removing more than 1/3 of the lawn's height can be detrimental to the health of the lawn.

Grass Variety

Mowing
Height
Range
(inches)

Optimal Mowing
Height
(inches)

Normal Mowing
Frequency
(days)

Buffalograss

1.0 - 2.0

1.5

7 - 14

Centipedegrass

1.0 - 2.0

2.0

7 - 14

Common Bermudagrass

1.0 - 3.0

1.5

3 - 7

Hybrid Bermudagrass

0.75 - 2.0

1.0

3 - 7

Kentucky Bluegrass

1.5 - 3.0

2.0

5 - 7

St. Augustinegrass

2.0 - 4.0

2.5

5 - 7

Tall Fescue

2.0 - 4.0

2.5

7 - 14

Texas Bluegrass (Reveille)

1.5 - 3.0

2.0

5 - 7

Zoysia japonica
(coarse bladed Zoysia)

1.0 - 2.5

1.5

7 - 10

Zoysia matrella (fine bladed Zoysia)

0.5 - 3.0

1.0

5 - 7