Beginner Friendly
8 min read
Homeowners
March - April

Spring Lawn Preparation Guide

Get your New Jersey lawn ready for the growing season with this comprehensive, step-by-step guide from Bruno's landscaping professionals. Follow these proven techniques for a lush, healthy lawn all season long.

Quick Overview

Spring lawn preparation is crucial for establishing a healthy foundation for the entire growing season. This guide covers the essential tasks needed to transition your lawn from winter dormancy to active growth.

Best Time to Start:

Early March when temperatures consistently reach 45°F

Completion Timeline:

6-8 weeks from start to finish

Seasonal Timeline

Early March

45-50°F
  • Clean up debris
  • Assess winter damage
  • Check irrigation systems

Mid to Late March

50-60°F
  • First mowing
  • Apply pre-emergent herbicide
  • Begin fertilization

Early April

60-70°F
  • Core aeration
  • Overseeding
  • Deep watering begins

Late April

65-75°F
  • Regular maintenance routine
  • Monitor new growth
  • Weed control

Supplies You'll Need

Essential Items

  • Rake (both leaf and dethatching)
  • Lawn mower with sharp blades
  • Spring fertilizer (balanced N-P-K)
  • Pre-emergent herbicide
  • Garden hose with sprinkler attachment

Optional/Professional

  • Core aerator (rent or hire)
  • Grass seed (matching existing variety)
  • Soil test kit

Step-by-Step Instructions

1

Clean Up Winter Debris

Remove leaves, branches, and any debris that accumulated over winter.

EasyFirst warm day in early March
  • Rake all areas thoroughly, including under shrubs and trees
  • Remove dead plant material from flower beds
  • Clear gutters and drainage areas
  • Check for and repair any winter damage to hardscaping
2

Assess Winter Damage

Examine your lawn and landscape for winter damage and plan repairs.

EasyEarly March, after cleanup
  • Look for brown or bare spots in the lawn
  • Check for salt damage near driveways and walkways
  • Inspect trees and shrubs for broken branches
  • Note areas that may need reseeding or repair
3

Perform Soil Test

Test your soil pH and nutrient levels to guide your fertilization program.

ModerateMid-March, when soil is workable
  • Collect soil samples from 6-8 different areas
  • Test for pH, nitrogen, phosphorus, and potassium levels
  • New Jersey soils typically need pH between 6.0-7.0
  • Use results to select appropriate fertilizers
4

Apply Pre-Emergent Herbicide

Prevent crabgrass and other annual weeds from germinating.

ModerateLate March to early April
  • Apply when soil temperature reaches 55°F consistently
  • Use a spreader for even application
  • Water lightly after application
  • Timing is critical - too early or late reduces effectiveness
5

Core Aeration

Relieve soil compaction and improve root growth and water penetration.

Moderate to HardEarly April, ideal conditions
  • Best done when soil is moist but not waterlogged
  • Use a core aerator that removes plugs of soil
  • Focus on high-traffic areas and compacted zones
  • Leave soil plugs on surface to break down naturally
6

Fertilize and Overseed

Feed your lawn and fill in thin or bare areas with new grass seed.

ModerateEarly to mid-April
  • Apply a balanced spring fertilizer (e.g., 20-5-10)
  • Choose grass seed that matches your existing lawn
  • Rake seed into soil lightly for good contact
  • Keep newly seeded areas consistently moist
7

Begin Regular Watering

Establish a proper watering schedule for the growing season.

EasyApril through growing season
  • Water deeply but less frequently
  • Early morning watering is best (6-10 AM)
  • Provide 1-1.5 inches per week including rainfall
  • Adjust based on weather conditions and grass type
8

First Mowing of the Season

Cut grass to proper height to encourage healthy growth.

EasyWhen grass reaches 4+ inches
  • Ensure mower blades are sharp
  • Set mower to highest recommended setting initially
  • Never cut more than 1/3 of grass blade length
  • Cool-season grasses: 2.5-3.5 inches tall

Pro Tips from Bruno's Experts

🌱 Timing is Everything

Don't rush spring tasks. Wait for consistent temperatures and soil that's not waterlogged. Working wet soil can cause compaction that lasts all season.

💧 Water Wisdom

New Jersey's spring weather can be unpredictable. Monitor rainfall and adjust watering accordingly. Overwatering can be just as harmful as underwatering.

🔪 Sharp Blades Matter

Dull mower blades tear grass instead of cutting cleanly, leading to brown tips and increased disease risk. Sharpen or replace blades before the first mow.

🌿 Know Your Grass Type

New Jersey lawns typically have cool-season grasses like fescue or bluegrass. These have different care requirements than warm-season varieties.

Need Professional Help?

While this guide covers DIY spring preparation, Bruno's professionals can handle complex tasks like aeration, soil amendments, and comprehensive lawn renovation programs.