Care of San Augustine Grass

Water, fertilize and mow for healthy green St. Augustine grass.

St. Augustine grass is a turf grass commonly grown along coastal areas of the United States because it needs mild winter temperatures. The grass tolerates a range of soil types but not waterlogged or dry conditions, according to Texas A&M University's AgriLife Extension Service. It will survive with little care, but some attention will help it to grow better.

Watering

Give St. Augustine grass supplemental water when the weather is especially dry. Long, deep soaks should be done in the morning to give the grass time to dry during the day. Evening watering invites disease infestation.

Mowing

Mowing height depends on the cultivar, or variety, of St. Augustine grass and the location. Texas A&M's extension service recommends a 1-3 inch mowing height for that state, while the University of Florida Extension Service recommends mowing standard cultivars at 3 1/2 to 4 inches for the best health and appearance. In the fall, keep the grass 1 inch taller to help it conserve energy during the winter.

Fertilize

Feed St. Augustine grass with a high-nitrogen fertilizer to improve the color and growth. Texas A&M's extension service recommends 1 pound of nitrogen for every 1,000 square feet of lawn in sandy soils each month during the growing season. University of Florida suggests applying fertilizer to St. Augustine grass in two to six applications from spring green-up through fall. Continue fertilizing into late fall to help St. Augustine grass keep its color and density through the winter.

References

• Texas A&M University: St. Augustine Grass
• University of Florida: IFAS Extension: St. Augustine Grass for Florida Lawns