Overseeding in Middle Tennessee: Timing, Grass Mix, and Dog Damage to Oak

A homeowner with a 2-year-old Kentucky 31/bluegrass lawn asked about fall overseeding and whether dog urine killed a young oak.

Overseeding Strategy

• Timing: Wait for cool weather and fall rains (late Sept–Oct).
• Grass choice: Favor bluegrass over fescue—5x more seeds/lb, finer texture, rhizomatous spread.
• Method: Mow low, aerate, seed, topdress with compost, water lightly.

Dog Urine and Oak Trees

Continuous urination on a small oak can cause salt buildup, root burn, and death—especially combined with drought. Oaks are hard to establish; tissue analysis (via state lab) confirms cause. Protect new trees with barriers.

Fall overseeding with bluegrass thickens the lawn naturally. Keep dogs off young trees.