Spring Bare Spot Repair in Central Ohio: Close the Window Before Summer Heat

The seeding window in Central Ohio closes when soil temperature crosses 70 degrees and summer heat dries the top 3 inches faster than new roots can reach moisture. In Circleville, Columbus, Lancaster, Chillicothe, and Washington Court House that typically happens around Memorial Day weekend. That gives you roughly three weeks.

If you have bare spots right now and you want them filled before July, this week is the week. Here is the step-by-step for Central Ohio.

First: identify the cause, or you will repeat the damage

Bare spots have four common causes across our service area. Each needs a different fix, and seeding over the wrong cause just wastes seed.

Snow mold (circular matted patches, light-colored): rake out the matted thatch. The grass underneath is usually alive. No reseed needed.

Vole damage (meandering surface tunnels): rake out the loose debris. Seed lightly into any bare zones.

Salt damage (straight dead strips along driveways and streets): flush the soil with water for 15 minutes to leach salt. Wait 3 days. Then reseed.

Compaction (thin lines where people consistently walked through winter): aerate first. Seed alone on compacted soil will never develop roots.

Dog urine burn (round yellow-brown spots with dark green rings): rake out the dead grass. Flush the spot heavily with water. Then reseed.

Walk your lawn, identify each bare spot by cause, and group your fixes.

The seeding playbook for spring repair

Spring seeding is harder than fall seeding because heat arrives fast. To win the window:

1. Rake out dead material to expose soil
2. Scarify lightly with a metal rake or dethatcher to get grooves
3. Choose the right seed — tall fescue for sunny spots, fine fescue for shade, 80/20 tall fescue/Kentucky bluegrass blend as the all-purpose pick
4. Apply seed at 3 lbs per 1000 sq ft for overseed, 6 lbs per 1000 sq ft for bare spots
5. Cover lightly with 1/4 inch of topsoil or peat moss
6. Water twice per day for 14 days, keep soil surface damp until germination (5-12 days for fescue)
7. Do not mow until new grass is 3 inches tall

What goes wrong in spring seeding (and how to avoid it)

Birds eating seed — cover with a light layer of straw or peat moss, or use coated seed.

Seed washing away — if you are on a slope, use seed blanket netting, not straw.

Heat arriving before roots establish — start this week, not next. Every day of delay pushes germination closer to summer heat.

Starter fertilizer forgotten — young grass needs phosphorus to root. Use a starter fertilizer (label will say “starter”) at half label rate on new seed.

Pre-emergent applied to the same area — crabgrass preventer blocks new grass seed too. If you already applied pre-emergent this spring, you have to wait until fall to seed that area.

The patch that needs aeration first

If you can push a screwdriver into your lawn to its handle with moderate effort, compaction is not your main problem and seed will work. If the screwdriver barely goes 2 inches, aerate first.

Spring aeration plus seed is a one-morning job for a pro crew and it is the single highest-ROI fix for a thin lawn. Our aeration service in Circleville, Columbus, Lancaster, Chillicothe, and Washington Court House runs $250 to $500 per property depending on lot size — including core aeration, targeted overseed, and a starter fertilizer application.

The add-ons that make the repair hold

A spring repair that includes only seed usually needs redoing by September. A spring repair that includes aeration, starter fertilizer, and proper watering schedule holds through summer.

And three other things worth handling this week on the same visit:

• Weed control — broadleaf spray before seeding (not after), to remove the competitors for your new grass
• First fertilizer app — balanced NPK for the established grass, starter for the seeded spots
• Mulch install — the same week the crew is on site is the efficient bundle

The takeaway

Seeding window in Central Ohio closes around Memorial Day. This week is the week to identify cause, prep soil, aerate if compaction, seed with the right variety for your sun exposure, and commit to 14 days of twice-daily watering. Do it right once — not three half-measures that each fail.