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Post-dethatching, lawn recovery includes watering, fertilizing, and reseeding as necessary to restore health and promote growth.

You can use a fungicide to help control powdery mildew, but you should apply it judiciously as it can damage soil health and persist in the soil. Most of the time, proper watering, surface drying, and limiting shade can control powdery mildew without needing harsher interventions. If you have a repeated problem with powdery mildew, you can also try planting a shade-resistant type of grass that will be less susceptible to the fungus.

If the grass is dead, you cannot bring it back to life. However, you can grow new grass in its place or try the methods mentioned above to revive the grass if it isn’t entirely dead. You can expect St. Augustine grass to come back after moderate droughts, but it will suffer significant nutrient loss after an extended period of drought.

On average, the cost of lawn fertilization is $250, ranging from $80 to $400, depending on the size of the lawn, its current condition, additional treatments, number of applications, fertilizer type, and location. Keep in mind that labor, tools, and equipment make up 80% to 90% of the total cost of lawn fertilization. Additional lawn treatment options include:

• Lime treatment: $100–$150 per 1,000 square feet

• Crabgrass treatment: $30–$80

• Grub treatment: $30–$80

• Mulching: $150–$400

• Dethatching: $265–$295