Topdressing St. Augustine with Compost: How Much Is Safe?

Application Rate

Apply a **light covering—about ½ inch**—not enough to bury grass blades. Hand-broadcast for even distribution.

Timing & Companions

• Spring application ideal.
• Combine with dry molasses (10 lbs/1,000 sq ft) or sugar (4 lbs/1,000 sq ft).
• Water in thoroughly.

Why This Works

Sugar/molasses feeds microbes that activate the compost, accelerating decomposition and nutrient release. Microbes work year-round, building soil structure and fertility. Blades stay exposed for photosynthesis.

Centipede Grass Note

Centipede is sensitive to high nitrogen and organic overload. Skip compost/topdressing on centipede areas—just sugar/molasses if needed.