Verticutting - cleans, thins, removes thatch, and improves mowing
"There are myriad benefits to Verticutting, which has also fueled its popularity. Jeff Buchko, a product manager for Jacobsen lawn equipment, says more university researchers have concluded that verticutting is a cultural practice that's critical to turf care"
St. Augustine grasses
The dominant grass in central and So. Florida is St. Augustine. The excessive top growth, along with the accumulation of thatch creates many problems.
While cleaning & thinning your lawn, Verticutting allows your lawn to breathe again, stimulating root growth. Opening the lawn-up allows air, sun, water, and fertilizer to drive the root system deeper, thru removing the top growth and thatch. This vastly improves mowing.
All grasses accumulate thatch, see thatch