St. Augustine Grass in Full Sun: Tips for a Luscious Lawn

If you live in a warm climate and want a lush green lawn, St. Augustine grass is a popular choice. This grass is a warm-season grass that thrives in hot and humid conditions. However, if your lawn is exposed to full sun, it can be challenging to keep your St. Augustine grass healthy and looking its best. In this article, we’ll give you some tips on how to care for St. Augustine grass in full sun.

Understanding St. Augustine Grass

Before we dive into the tips, let’s take a quick look at St. Augustine grass. This grass is known for its blade shape, which is flat and wide. It has a dense growth pattern and grows best in warm and humid climates. St. Augustine grass is also known for its tolerance to shade, making it a popular choice for lawns with partial shade.

Tips for Growing St. Augustine Grass in Full Sun

  1. Water your lawn deeply and infrequently: St. Augustine grass needs about 1 inch of water per week. However, it’s better to water your lawn deeply and infrequently rather than shallowly and frequently. This will help the roots grow deeper, making the grass more resistant to drought.
  2. Fertilize your lawn regularly: St. Augustine grass needs regular fertilization to stay healthy. You should fertilize your lawn every six to eight weeks during the growing season. However, be careful not to over-fertilize, as this can lead to thatch buildup and other problems.
  3. Mow your lawn at the right height: St. Augustine grass should be mowed at a height of 3-4 inches. Mowing too short can stress the grass and make it more susceptible to disease and pests.
  4. Control weeds: Weeds can compete with St. Augustine grass for water and nutrients. Use a pre-emergent herbicide to prevent weeds from germinating, and pull any weeds that do appear.
  5. Provide shade: If your lawn is in full sun, consider planting trees or installing shade sails to provide some relief from the heat. St. Augustine grass can tolerate some shade, and this will help prevent the grass from getting too stressed.

Common Problems with St. Augustine Grass in Full Sun

Even with proper care, St. Augustine grass can still have some problems when exposed to full sun. Here are some of the most common issues:

  1. Drought stress: St. Augustine grass needs regular watering to stay healthy. If your lawn is not getting enough water, the grass can become stressed and turn brown.
  2. Heat stress: St. Augustine grass is a warm-season grass, but it can still be stressed by extreme heat. If your lawn is in full sun, consider providing some shade to prevent heat stress.
  3. Pest infestations: St. Augustine grass can be susceptible to pests such as chinch bugs and sod webworms. Keep an eye out for any signs of infestation, such as yellowing or brown spots on the lawn.


St. Augustine grass is a great choice for warm climates, but it can be challenging to grow in full sun. By following these tips, you can keep your St. Augustine grass healthy and looking its best. Remember to water deeply and infrequently, fertilize regularly, mow at the right height, control weeds, and provide some shade. With proper care, you can enjoy a luscious green lawn all season long.


1. Can St. Augustine grass survive in full sun?
Yes, St. Augustine grass can survive in full sun, but it needs proper care to stay healthy.

2. How often should I water my St. Augustine grass?
St. Augustine grass needs about 1 inch of water per week. Water deeply and infrequently to encourage deep root growth.

3. What kind of fertilizer should I use on St. Augustine grass?
Use a fertilizer specifically formulated for St. Augustine grass. Follow the instructions carefully to avoid over-fertilization.

4. How often should I mow my St. Augustine grass?
Mow your St. Augustine grass every 7-10 days during the growing season. Keep the blade height at 3-4 inches.

5. What should I do if my St. Augustine grass gets brown patches?
Brown patches can be a sign of pest infestation or disease. Call a lawn care professional to diagnose and treat the problem.

If you enjoyed this article, check out more lawn care tips on our website. At [Brand Beacon], we’re committed to helping you maintain a beautiful and healthy lawn all year long.

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