Five signs your lawn needs a spring cleanup in Lake County

Every year, Lake County homeowners face the same question once the last snowpack recedes in late February or early March: how bad is it under there? The answer depends on the winter you just had, but the signs that your lawn needs professional attention are remarkably consistent from Glenview to Lincolnshire and everywhere in between. Here are the five things we look for on every early-spring walkthrough—and what to do about each one.

1. Matted leaves and debris smothering your turf

If you did not get a final leaf removal done in November, there is a good chance several inches of wet, matted leaves are sitting on your lawn right now. Oak and maple leaves are the worst offenders across the North Shore—they pack down under snow into a dense, soggy blanket that blocks sunlight and traps moisture against the crown of your grass plants.

Left in place for even a few weeks after snowmelt, that debris layer can thin out healthy turf and create bare spots that weeds will happily colonize by May. A thorough spring cleanup starts with removing every bit of this matted material, either with a stiff power rake or a combination of blowers and hand raking on beds and borders. In neighborhoods like Northbrook and Deerfield, where mature trees drop enormous volumes of leaves, this step alone can take a full crew several hours on a typical residential lot.

2. Snow mold—gray and pink patches on the lawn

Snow mold is one of the most common turf diseases in northern Illinois, and Lake County sits squarely in the zone where both varieties thrive. Gray snow mold (Typhula spp.) appears as circular, straw-colored patches a few inches to a foot across, often with a grayish-white mycelium visible at the edges early in the morning. Pink snow mold (Microdochium nivale) produces similar patches but with a faint pinkish hue along the margins. Pink snow mold is the more aggressive of the two because it can damage the crown of the plant, not just the leaf blades.

Both types develop under prolonged snow cover, especially when snow falls on unfrozen ground—a pattern we see regularly along the North Shore. The good news is that most gray snow mold damage is cosmetic and will grow out once temperatures warm and the turf dries. Lightly raking the affected areas to break up the matted grass and improve air circulation speeds recovery significantly. For pink snow mold damage or severe cases, overseeding may be needed later in spring.

3. Vole runs and rodent damage

Voles—small, mouse-like rodents—are extremely active under snow cover. They build elaborate surface-level runway systems through the turf, gnawing grass down to the soil line as they travel. When the snow melts, these runs are suddenly visible as a network of narrow, bare trails crisscrossing the lawn. In Riverwoods and other communities that border forest preserves or have naturalized areas nearby, vole damage can be extensive.

The trails themselves will usually fill back in on their own as the grass grows, but heavy damage may require light overseeding. More importantly, voles also girdle the bark on young trees and shrubs at the snow line. Walk your property and inspect the base of any young ornamental trees, especially those planted in the last two to three years. If you see bark stripped in a ring around the trunk, the tree may need attention or, in the worst cases, replacement.

4. Compacted soil from freeze-thaw cycles

Lake County winters are defined by repeated freezing and thawing. Every cycle pushes soil particles closer together, squeezing out the air pockets that grass roots need to absorb water and nutrients. By March, the top few inches of your soil are often significantly more compacted than they were in the fall, especially in high-traffic areas like paths between the driveway and the back gate, or play areas where kids packed down snow all winter.

Compacted soil leads to poor drainage, shallow root growth, and thin turf that struggles through summer heat. Core aeration—pulling small plugs of soil out of the lawn to create channels for air, water, and fertilizer—is the standard remedy. While fall aeration is ideal for cool-season grasses, a spring aeration can be valuable for lawns that are severely compacted or that suffered significant winter damage. We typically recommend it for properties in Glenview and Deerfield with heavy clay soils, which are particularly prone to compaction.

5. Dead and damaged perennials that need cutting back

Ornamental grasses, hostas, daylilies, sedums, coneflowers—the perennial beds that looked so good last August are a tangle of brown, broken stems by late winter. Cutting back last season's dead growth is not just cosmetic. Leaving it too long delays new growth, harbors overwintering pests and disease spores, and makes it harder to spot emerging shoots that you do not want to accidentally damage.

Timing matters here. Some perennials, like ornamental grasses and late-blooming sedums, can be cut back as soon as the snow clears. Others, particularly those that provide early food for pollinators or that have hollow stems where beneficial insects overwinter, benefit from waiting until daytime temperatures are consistently above 50 degrees. A knowledgeable crew will know which plants in your beds need early attention and which ones to leave alone for another few weeks.

When to start cleanup in Lake County

Timing a spring cleanup on the North Shore is part science, part local knowledge. In an average year, the window opens in mid-to-late March, once the ground has thawed enough that raking will not tear up turf and the soil is dry enough to walk on without leaving ruts. In mild winters, that window can shift to early March. In a year with heavy late-season snow, you may be waiting until early April.

The key indicators are straightforward: daytime temperatures consistently above 40 degrees, snow fully melted from lawn areas (not just driveways and walks), and soil that does not squelch underfoot. If you can walk across your lawn without leaving visible footprints, it is ready. For most properties in Glenview, Northbrook, Riverwoods, Deerfield, and Lincolnshire, we start scheduling cleanup visits the first week of March with the goal of having every property serviced before the first fertilizer application in mid-April.

What a professional spring cleanup includes

A thorough spring cleanup is more than just raking. When our crews arrive at a property, the scope of work typically includes:

• Full debris removal—matted leaves, fallen branches, and any winter litter cleared from lawn areas, beds, and hardscape surfaces
• Power raking or dethatching of the lawn to break up matted grass, improve air circulation, and expose soil for better seed-to-soil contact if overseeding is needed
• Perennial cutback—all dead stems and foliage from last season removed, with timing appropriate to each plant species
• Bed edging to re-establish clean lines between lawn and planting beds
• Inspection for winter damage—snow mold, vole damage, frost heaving, broken branches, and any hardscape issues like shifted pavers or cracked edging
• Light pruning of broken or damaged branches on trees and shrubs
• Initial weed pull to remove early-emerging weeds before they establish

This first visit sets the tone for the entire growing season. A lawn that goes into April clean, open to sunlight, and free of disease pressure will respond far better to fertilizer, weed control, and irrigation than one that is still buried under last year's debris.