Most lawn experts agree; if you fertilize your lawn only once a year, do it in the fall. Grass grows much slower as the weather turns cool, but the grass roots continue to grow quickly. A fall application of fertilizer delivers essential nutrients for the grass to grow deeper roots now and to Most lawn experts agree: if you fertilize your lawn only once a year, fall is the time to do it. As cooler weather slows top growth, grass roots continue to grow vigorously underground. Applying fertilizer in autumn delivers essential nutrients that support deeper root development now and store reserves for a stronger, greener lawn next spring.
🍂 Benefits of Fall Fertilizer
Fall is the season when cool-season grasses recover from summer stressors like drought, heat, and heavy use. Proper fall fertilization allows turfgrass to build up carbohydrate reserves, which:
- Help resist winter injury and disease
- Fuel root and shoot growth in early spring
- Improve winter color and enhance spring green-up
- Support deeper, stronger root development
📅 Important Reminder for Suffolk County Residents All lawn fertilizers must be applied by October 31st, 2025. Fertilizer use is restricted from November 1st through April 1st.
🌳 Trees & Shrubs Benefit Too Fall is also a key time for woody plants to develop their root systems. Fertilizing now ensures they’re well-nourished and ready to thrive next spring.
🛒 Visit Decker’s Nursery We’re here to help with product recommendations and expert advice. Choose from high-quality fertilizers for lawns and ornamentals — including organic options.
🛠️ Repair Damaged Areas
Fall offers ideal conditions for lawn repair. While air temperatures cool, the soil remains warm from summer, creating perfect conditions for root development and grass seed germination.
🚿 Keep On Mowing & Watering
Continue mowing and watering as needed throughout the fall. While watering frequency may decrease, consistent moisture is still essential for healthy root growth.