The Q&A Archives: St.Augustine Grass Is Dying

Question: St.Augustine type of grass is dying.

Answer: Without more detail on how you are caring for it, it's hard to determine exactly what the problem is. Some possibilities include sunlight, salt build-up, or thatch. St. Augustine is a grass that does better in somewhat shady conditions, needing about 30 percent filtered sunlight, as opposed to Bermuda, which takes full sun. It also suffers from salt build-up, so make sure that when you water, the water penetrates past the root zone to leach away accumulated salts. It would need to soak about 10 inches deep. St. Augustine is also somewhat prone to thatch build-up. If you've never dethatched and thatch is over one-half inch thick, dethatching may reinvigorate your lawn. "Desert Landscaping for Beginners," 0-9651987-3-1, Arizona Master Gardener Press, has an excellent chapter on turf care for the low desert.

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