Lawn Care Through the Seasons: What Changes and Why It Matters

A lawn in the Chicago suburbs faces four genuinely different environments across the year — cold winters, wet springs, hot summers, and transitional falls. The grass that makes it to November looking strong is the grass that got the right care at the right time, not a consistent treatment year-round.

Spring: waking up and establishing growth

Spring in Illinois can arrive abruptly, and the grass often starts growing before the soil has fully warmed. Early spring is the time to:

• Clear any debris or matted leaves left from winter
• Dethatch if thatch buildup is significant (more than half an inch)
• Begin mowing as soon as the grass is actively growing — typically when it reaches 3 to 4 inches
• Schedule gutter cleaning after winter
• Apply fresh mulch to garden beds before weed season

Spring is also when weeds are most aggressive. Consistent mowing at the right height (not too short) helps the grass compete effectively.

Summer: maintaining what you've built

Summer heat puts cool-season grasses like Kentucky bluegrass and fescue (common in Illinois) under stress. During the hottest stretches:

• Raise the mowing height slightly — taller grass shades the soil and retains moisture
• Avoid mowing during the heat of the day
• Watch for signs of drought stress (bluish-gray tint, footprints that stay visible)
• Be cautious with any treatments during heat stress — the grass is vulnerable

Consistent mowing frequency matters most in early summer when growth is at its peak. In late summer, growth often slows and you may be able to extend intervals slightly.

Fall: the most important season for long-term health

Fall is when lawns set themselves up for next year. Cool temperatures and moisture are ideal for grass growth and recovery. This is the best time for:

• Overseeding thin or bare areas — seeds germinate well in fall conditions
• Fall fertilization — the grass is actively growing roots and storing nutrients
• Gutter cleaning after the leaves have fallen (late October to November)
• Final mowing of the season at the right height — not too short (susceptible to winter kill) and not too long (matting and disease)

Winter: preparation and protection

Once the ground freezes, there's little active maintenance to do. But the decisions made in fall directly determine how well the lawn comes back in spring. A lawn that went into winter at the right height, with its gutters clear and its beds mulched, will generally emerge in much better condition than one that didn't.

We adjust our services to match the season and the specific needs of each property. Contact us to discuss what your lawn needs right now.