How often should grass be mowed in Illinois?
Most Illinois lawns need mowing on a roughly weekly schedule during peak spring growth, and can often shift to a longer interval during hot, dry summer stretches when grass growth slows. The right frequency depends on grass type, rainfall and how short the lawn is kept.
Cool-season grasses common in Illinois grow fastest in spring and fall, which usually means more frequent mowing during those periods.
During hot, dry mid-summer weeks, growth often slows and mowing can be spaced out to avoid cutting the grass too short under stress.
A recurring mowing schedule is typically adjusted through the season rather than kept fixed year-round.
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