Why Crabgrass Thrives Around Concrete in Late Summer

As the lingering heat of late summer takes hold, crabgrass tends to emerge in predictable areas—especially along sidewalks, driveways, and curbs. These borders create an ideal environment for crabgrass—and Hometurf is here to explain why, and what you can do about it.

What Makes Edges So Prone to Crabgrass?

Concrete absorbs and radiates significant heat into the surrounding soil, elevating temperatures well above that of the central lawn. Cool‑season grasses falter in these hot, dry edge zones—but crabgrass flourishes. By late summer, conditions are ripe for its germination and growth.

How It Unfolds:

  • Fading pre-emergent protection: Spring‑applied pre‑emergent treatments naturally weakens under the influence of sunlight, soil microorganisms, and elevated heat. Soil near concrete—often 10–15 °F warmer—speeds up that breakdown, leaving the edges vulnerable by late summer.
  • Stressed turf creates opportunity: Lawn grass weakened by heat and dryness near borders becomes thin or patchy. Crabgrass seeds, often dormant in the soil for years, seize the opportunity and emerge quickly.
  • It spreads inward: Once crabgrass takes root at the edges, it often migrates inward, potentially causing widespread control challenges for the season ahead.
Crabgrass in the Fall

How Hometurf Helps Preserve Lush, Green Borders

Hometurf’s lawn care philosophy is all about delivering award‑winning, hassle‑free service that you—and your neighbours—can trust In late summer, that means:

  • Focusing on laser‑targeted treatments for vulnerable edge zones.
  • Reinforcing turf health and resilience through supportive lawn care strategies.
  • Staying true to our pet‑ and child‑friendly, locally managed ethos across Ontario and Calgary.

Our regional experts understand local climate challenges—from Ontario’s humid summers to Calgary’s heat—and adjust care plans accordingly.

Steps You Can Take in the Meantime

To complement Hometurf’s tailored summer services, here’s what you can try at home:

  • Water intelligently: Keep the high-heat edge areas hydrated during dry spells to ease stress on the turf.
  • Mow smartly: Use sharp mower blades and avoid cutting too short along concrete—scalping only opens the door to crabgrass.
  • Avoid soil disruption: Digging or tilling near borders can unearth dormant crabgrass seeds and fuel new growth.

A Winning Combo: You + Hometurf = Year-Round Lawn Success

By combining your best maintenance practices with Hometurf’s customized treatments—including crabgrass control, overseeding, fertilizers, and more—you’re setting the stage for stronger turf now and long-term health into the next season.