Keeping St. Augustine Green - Knowledgebase Question

South Gate, CA (Zone 10)
Question by avfam
September 4, 2005
I would like to know how to maintain my grass green all the time? our grass is call San Augustine grass, and we have been watering every day but it seems like is dying every day.


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Answer from NGA
September 4, 2005

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Without more detail on how you are caring for it, it's hard to determine exactly what the problem is. Some possibilities include excessive 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. Watering everyday is excessive and will keep the moisture at the soil surface which will result in shallow roots and quick die off of your lawn. It's better to apply water slowly and infrequently than to water every day. 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.

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