Sun-damaged lawns are a common challenge for Ontario landscapers and landscape contractors, especially after prolonged heat and drought. Brown patches, thinning turf, and compacted soil all point to turf stress that needs more than a cosmetic fix. Successful lawn recovery means applying a smart, targeted strategy using the right combination of grass seed, mulch, and topsoil.

The key to reviving heat-damaged turf is understanding what the lawn needs to re-establish healthy, resilient growth.

Soil First: Build the Base

Don’t throw seed on dead ground and expect results. If the existing soil is compacted or lifeless, it needs conditioning. Incorporate screened topsoil or compost into thin or patchy areas to improve structure and water retention. A shallow layer—no more than 1/2 inch—is enough to create a viable seedbed without burying the seed too deep. Loosen the surface before applying any seed or fertilizer.

Seed Selection Matters

In Ontario’s cool-season zone, go with blends designed for durability and performance. Tall fescue is excellent for drought and wear tolerance, Kentucky bluegrass offers dense coverage and self-repairing rhizomes, and perennial ryegrass gives quick germination. Together, these create a balanced, high-performance mix.

For shady properties or mixed sun conditions, look for sun/shade blends that include fine fescues like creeping red fescue or chewings fescue. These tolerate low light and pair well with other cool-season grasses.

Always choose high-quality seed, preferably coated or enhanced with starter nutrients and water-retention polymers. For overseeding stressed turf, increase application to 1.5 to 2 times the new lawn rate to ensure strong, uniform coverage.

Mulch Is Non-Negotiable

Once seeded, mulch plays a critical role in moisture control. Use clean straw mulch (free of weed seed), biodegradable mulch blankets, or compost-based top dressings that double as soil improvers. Apply lightly—just enough to cover seed without matting it down. The goal is to keep moisture in and protect the seed from sun and erosion.

Watering Strategy

Moisture is essential for germination and early root growth. For the first 10–14 days, water several times a day to keep the seedbed consistently moist. After germination, transition to deeper, less frequent watering to promote strong root development. A properly set timer system helps ensure consistency across jobs.

Post-Germination Practices

New grass is vulnerable. Minimize traffic for at least three weeks post-germination. Hold off mowing until the new grass reaches 3–3.5 inches. When you do mow, never cut more than one-third of the grass height at a time.

Start with a phosphorus-rich starter fertilizer when seeding, followed by a balanced slow-release product about 6–8 weeks in. This supports strong roots and sustained growth through the season.

Seasonal Timing and Execution

Ontario contractors should aim for early fall or early spring overseeding windows. These periods offer moderate temperatures and more reliable rainfall. Avoid peak summer unless irrigation can be tightly controlled.

Professional Results Clients Notice

For contractors, the difference between a quick fix and a lasting solution is in the process. A thorough renovation—topsoil improvement, strategic overseeding, proper mulching, and managed watering—sets up the turf for long-term health.

Clients want lawns that bounce back quickly and stay green. With the right tools and materials, even severely sun-damaged turf can be brought back better than before.

Use quality seed. Use the right mulch. Respect the soil. That’s the formula for lawn repairs that stick—and customers who come back every season.

Get the Supplies You Need from FSI Landscape Supply

When you’re tackling lawn repairs, don’t cut corners on materials. FSI Landscape Supply carries premium grass seed, nutrient-rich topsoil, and professional-grade mulch to get the job done right. Whether you’re restoring small residential patches or revitalizing large commercial properties, FSI has the right products in stock and ready to go. Contact us today!