Start Seeding Cool-Season Turf Now – Turfgrass Science at Purdue University

Start Seeding Cool-Season Turf Now



The best time to seed a cool-season lawn is in the late summer to early fall. Adequate soil moisture, warm soil, and limited weed pressure allow for excellent seedling growth. Normally, we recommend seeding between August 15 and September 15 as the optimum seeding window. However, due to our cool summer and a relatively cool forecast for August, we are recommending that you can start seeding anytime now and there is no need to wait until mid-August.


It is critical to seed as early as possible within this window. Even when seeding within this window, waiting one week later to seed may mean the turf will take 2 more weeks to mature as germination and subsequent growth slows later in the fall as temperatures cool. Additionally, annual bluegrass and other winter annual weeds will be more problematic with fall seeding dates than late summer seeding dates.

Seeding early (later summer) allows the turf to maximize its establishment and rooting prior to the next summer’s heat and drought.

For more information about establishment, see:

Aaron Patton, Turfgrass Extension Specialist

Share This Article
Disclaimer: Reference to products is not intended to be an endorsement to the exclusion of others which may have similar uses. Any person using products listed in these articles assumes full responsibility for their use in accordance with current directions of the manufacturer.
Turfgrass Science at Purdue University - Horticulture & Landscape Architecture, 625 Agriculture Mall, West Lafayette, IN 47907

© 2022 Purdue University | An equal access/equal opportunity university | Copyright Complaints | Maintained by Turfgrass Science at Purdue University

If you have trouble accessing this page because of a disability, please contact Turfgrass Science at Purdue University at | Accessibility Resources