Over-watering your lawn can result in fungus and spur excessive weed growth.
Under-watering your lawn can result in dry areas and Chinch bugs.
Baking soda sprinkled on crabgrass has been known to kill it without causing damage to the surrounding turf.
If you are experiencing excessive growth of dollarweed then try cutting back on watering.
Dollarweed by nature is an aquatic species that thrives in excessive moisture.
Check irrigation heads on occasion to make sure that they are providing adequate coverage throughout your lawn without spraying too much into the street or driveway.
St. Augustine grass prefers to be mowed between 2.5"-3" tall. Mowing any shorter could expose the roots and cause them to dry out.
Never mow more than 1/3 of the grass blade at a time.
Aerating your lawn will help to relieve compaction and promote root growth. Thatch buildup can choke your lawn.