When to fertilize lawn?

Timing fertilizer applications to match grass growth cycles maximizes nutrient uptake and effectiveness while minimizing disease risk. Charlotte's two distinct growing seasons—warm-season grass spring growth and fall root development—create specific windows for optimal feeding.

Warm-Season Grass Fertilization Schedule

1. Early Spring (March): Apply balanced fertilizer like 10-10-10 as Bermuda and Zoysia break dormancy. This supports leaf growth and color recovery
2. Late Spring (May): Use lighter application or higher potassium ratio to strengthen plants before summer stress without promoting excessive tender growth susceptible to heat damage
3. Summer (June-July): Avoid heavy nitrogen feeding during peak heat. If needed, use organic sources that release slowly
4. Early Fall (August-September): Switch to higher potassium fertilizer (5-10-15) as growth resumes. This strengthens root systems and prepares for winter dormancy
5. Late Fall (November): Final application of slow-release nitrogen supports early spring green-up

Avoiding Summer Fertilization Risks

Heavy nitrogen feeding in June-August promotes lush growth that depletes water and creates conditions favoring fungal diseases like brown patch and leaf spot—common Charlotte lawn problems. Light, slow-release sources are safer during this period.

Cool-Season Overseeding

If overseeding with cool-season grass for winter color, fertilize the cool-season grass in fall and late winter when it's actively growing, separate from warm-season feeding.