Grub Control and Reseeding: Step-by-Step for a Damaged Lawn

Spring reveals 40% lawn loss, crabgrass invasion, and active grubs—a triple threat. Here's the correct sequence to restore your yard.

Step 1: Kill Grubs Now

Apply a curative grubicide containing trichlorfon (Dylox) or chlorantraniliprole (Acelepryn) immediately. These work on active, near-surface grubs. Water in ½″ after application. Avoid preventive products (imidacloprid, chlorantraniliprole as preventive) in spring—they target eggs/young grubs later in the season.

Step 2: Prepare Seedbed (Same Week)

• Rake out dead grass and debris.
• Loosen top ½–1″ of soil with a cultivator or rake.
• Spread starter fertilizer (high phosphorus, e.g., 12-25-10) at label rate.

Step 3: Seed Immediately

Use a quality turf-type tall fescue or Kentucky bluegrass blend for your region. Seed at 6–8 lbs/1,000 sq ft. Lightly rake in, then roll or tamp for seed-to-soil contact.

Step 4: Water Religiously

Keep surface constantly moist (not soggy) for 14–21 days: 2–3 light waterings daily. Reduce frequency as grass establishes.

Step 5: Summer Grub Prevention

In late June/early July, apply a preventive grubicide (imidacloprid or chlorantraniliprole) to stop the next generation.

Step 6: Fall Follow-Up

Overseed thin areas in early fall. Apply winterizer fertilizer (high potassium) in late October.

Fertilizer Timing Note

Starter fertilizer at seeding is essential. Do NOT apply standard nitrogen fertilizer until new grass has been mowed 2–3 times.