How to Prevent Weeds in Your New Sod Lawn

Weeds can be a nuisance in any lawn, but preventing them in newly installed sod is essential for maintaining a lush, green yard. At Long Island Sod Company, we help homeowners protect their sod from weeds with proper lawn care techniques. Follow this guide to keep your sod weed-free.

Why Do Weeds Appear in New Sod?

  • Soil Disturbance – When preparing soil for sod, dormant weed seeds may be exposed to sunlight, triggering growth.
  • Improper Watering – Overwatering or underwatering can weaken sod, allowing weeds to take over.
  • Lack of Fertilization – Poor soil nutrition makes sod less competitive against invasive weeds.

Tips to Prevent Weeds in New Sod

  1. Start with Healthy, High-Quality Sod

Choose farm-fresh sod that is free from weeds and pests.
Install sod promptly to prevent weeds from taking hold.

  1. Prepare the Soil Properly

Remove all weeds before laying sod.
Apply a starter fertilizer to promote strong root growth.
Level the soil to eliminate dips where weeds may take root.

  1. Water Correctly

Water 2-3 times per day for the first two weeks to establish deep roots.
Avoid overwatering, as excess moisture creates ideal conditions for weed growth.
Once established, transition to deep watering 2-3 times per week to strengthen roots.

  1. Mow at the Right Height

Allow sod to root before the first mow (2-3 weeks after installation).
Mow at the recommended height for your sod type:

  • Kentucky Bluegrass: 2.5-3 inches
  • Tall Fescue: 3-4 inches
  • Zoysia Grass: 1.5-2.5 inches
    Taller grass shades the soil, making it harder for weeds to sprout.
  1. Avoid Herbicides Too Soon

🚫 Do not use weed killers within the first 6 weeks of sod installation.
After 6 weeks, use a pre-emergent herbicide to prevent weeds from germinating.
Hand-pull any weeds that appear instead of using chemicals too soon.

Keep Your Lawn Weed-Free Year-Round

  • Spring & Fall: Apply a balanced fertilizer to strengthen sod and outcompete weeds.
  • Summer: Water deeply and mow high to prevent heat stress and weed invasion.
  • Winter: Remove fallen leaves to prevent mold and hidden weed seeds.

Get Expert Sod & Lawn Care in Long Island

At Long Island Sod Company, we provide premium sod and expert lawn care advice to keep your lawn green and weed-free.

Contact us today for sod delivery, installation, and maintenance tips!