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September Lawn Pest Control & Fertilization

Get a beautiful lawn

September marks the transition into fall, when cooler nights bring relief from summer heat. But it's also one of the most important months for lawn care — especially when it comes to pest control and fertilization. Pests like grubs and armyworms are still active, and your grass is preparing for the winter season.

Why Lawn Pest Control Matters in September

By taking the right steps in September, you can stop pest damage and give your lawn the nutrients it needs to thrive next spring.

  • Pests are active: Grubs, armyworms, and other insects feed aggressively in September, targeting roots and grass blades.
  • Grass needs recovery: After summer stress, your lawn benefits from extra nutrients to rebuild strength.
  • Winter preparation: Fertilization now helps grass store energy, so it survives cold weather and greens up faster in spring.

Common Lawn Pests in September

  1. Grubs
    September is the prime month for grub activity. These beetle larvae feed aggressively on grassroots, causing brown patches and loose sod. Grub treatment is most effective right now, before they burrow deeper for winter.
  2. Armyworms
    Armyworms thrive in late summer and early fall. They can quickly strip grass blades, leaving bare or thin areas in just a few days.
  3. Chinch Bugs & Sod Webworms
    Still active in warm climates, these pests continue to stress lawns into September, especially if grass is already weakened by heat or drought.

Signs of Lawn Pest Damage

  • Brown patches that don't improve with watering
  • Grass that pulls up easily due to root loss
  • Increased bird or animal activity digging for insects
  • Wilted or weak turf despite regular care

September Fertilization Tips

Along with pest control, fall fertilization is essential for building a stronger, healthier lawn:

  • Apply a fall fertilizer: Choose a fertilizer high in nitrogen and potassium to promote root growth and nutrient storage.
  • Time it right: Early to mid-September is ideal for fertilization, giving your grass plenty of time to absorb nutrients before winter.
  • Pair with aeration (if needed): Aerating your lawn in September allows nutrients, water, and oxygen to reach grassroots more effectively.
  • Avoid over-fertilizing: Too much fertilizer can stress grass and encourage excessive growth. Stick with professional recommendations.

Combined Strategy: Pest Control + Fertilization

The best results come from combining pest control with fertilization in September. Treating pests stops immediate damage, while fertilization strengthens your lawn against future stress. Together, these steps protect your investment and set the stage for a lush, green yard next spring.

Protect and Nourish Your Lawn with Happy Lawns

At Happy Lawns, we specialize in fall lawn pest control and fertilization services tailored to your yard's needs. Whether it’s stopping grubs, preventing armyworm damage, or feeding your lawn for winter, we’ve got you covered.

Fill out the quote request form or call us at (904) 721-0182 to schedule your September lawn treatment and give your grass the protection and nutrition it deserves!