Fall Overseeding a Spring-Planted Lawn: Seed, Water, Fertilizer

A homeowner's spring-seeded lawn looks great; they raked dead grass and want to overseed in cool fall weather. They ask what seed, when/how to water and fertilize.

Seed Choice

Use the same grass type already growing. If shade is an issue, mix fine fescues into Kentucky bluegrass.

Watering

• After seeding: water twice daily to keep seedbed constantly damp (light, frequent).
• Once germinated: gradually shift to infrequent, deep watering (e.g., once/week for 2 hours) over a few weeks.

Fertilizing

• Apply starter fertilizer (no herbicide/insecticide) before seeding or at germination.
• Apply to dry (not drought-stressed) lawn; water in well.