Fall Lawn Care: Essential Autumn Maintenance for Cool-Season Grasses

When top growth slows, roots are still active. Fall is the most important season for cool-season lawns — the work you do now determines next year's quality.

Key Fall Tasks

• Fertilize: Use a walk-behind spreader for even application. Follow label rates exactly — more is not better. Early to mid-fall is ideal.
• Weed control: Fall is the best time for broadleaf herbicides; weeds are actively translocating to roots.
• Repair bare spots: Overseed with matching grass or a repair mix. For warm-season lawns that brown in winter, overseed with perennial ryegrass for winter color.
• Manage leaves: Remove leaves promptly — they block light and trap moisture. A spring-tine rake also helps reduce thatch. Don't wait until all leaves fall; wet mats are harder to remove.
• Dethatch and aerate: Every 2 years for most lawns. Small areas: border fork or hollow tiner. Large lawns: rent a core aerator or hire a pro.