Comprehensive Fall-to-Spring Lawn Care Calendar for New York City

A NYC homeowner wants a two-month autumn plan for a healthy lawn now and next year. The advisor provides a full calendar through spring.

September

• Slow-release N at 1 lb/1,000 sq ft (calculate from bag %).
• Aerate compacted areas.
• Dethatch if >½ inch.
• Spot-treat weeds.
• Overseed thin spots.

October–November

• Best time for broadleaf herbicides.
• Mow at 2.5–3 inches until growth stops.
• Mulch leaves into turf.
• Lime ONLY if soil test says so.
• Late November: winterizer fertilizer (fast-release, e.g., 24-3-12) at 1 lb N/1,000 sq ft.
• Keep leaves from matting.
• Irrigate so soil is moist but not wet entering winter.
• Service mower; store with clean oil.
• Use calcium chloride or soluble fertilizer for ice melt—not salt.

Spring Prevention

• Vole damage: mow until dormant (final height 2 inches), clear vegetation near lawn.
• Snow mold: avoid excess fast-release N in early fall, manage thatch, improve drainage/air flow, mow until dormant.

Summary

Fertilize now (slow-release) and late November (winterizer). Final mow at 2 inches. Remove all debris before winter.