Seasonal lawn care calendar

Spring (March–May)

• Soil Test & Fertilize: Check pH and nutrient levels; apply a balanced fertilizer heavy in nitrogen.
• Aerate: Relieve soil compaction to allow roots to breathe.
• Overseed: Fill bare patches with grass seed for density.
• Weed Prevention: Apply pre-emergent herbicides to stop crabgrass and other weeds before they sprout.
• Mowing: Begin mowing at 2.5–3 inches, never cutting more than one-third of the blade.

Summer (June–August)

• Water Deeply: About 1 inch per week, early mornings only. In Hayward, stick to drought-conscious schedules.
• Mow Higher: Keep grass at 3 inches to shade soil and conserve moisture.
• Fertilize Lightly: Use slow-release fertilizer to avoid burning during heat.
• Pest & Disease Watch: Inspect regularly for brown patches, grubs, or fungal issues.
• Mulch Clippings: Leave grass clippings to recycle nutrients.

Fall (September–November)

• Aerate Again: Fall aeration strengthens root systems before winter.
• Fertilize Heavily: Apply a nitrogen-rich fertilizer to prepare for dormancy.
• Overseed: Best season for reseeding—cooler temps help germination.
• Leaf Management: Rake or mulch leaves to prevent suffocation.
• Weed Control: Spot-treat weeds before they overwinter.

Winter (December–February)

• Rest the Lawn: Grass is dormant; avoid heavy foot traffic.
• Equipment Prep: Sharpen mower blades, service irrigation systems.
• Plan Ahead: Send soil samples for testing to prepare for spring fertilization.
• Minimal Watering: Only water if there’s an extended dry spell.