What causes yellow patches in centipede grass?

The yellowing is a result of an iron deficiency which can be caused by several things. Some causes are high nitrogen applications before mid April, high phosphorus levels, cool night temperature, or a pH over 6.0. Centipedegrass will usually overcome this yellowing once temperatures warm up.

What does fungus look like in centipede grass?

Generally, brown patch fungus attacks the base of leaves where they are joined to stolons. Leaves turn yellowish or orangish in St. Augustine grass and reddish or purplish in centipede grass before dying. You may see a ring of one of these colors at the edge of the dead areas when the infection is active.

How do you treat yellow patches on grass?


  1. Thin out trees so plenty of sunlight can get to the area (without allowing full sunlight exposure all day)
  2. Maintain sharp mower blades and only mow when the grass is dry.
  3. Improve drainage of your lawn.
  4. Rake up any excess grass clippings and fallen leaves.

What fertilizer is best for centipede grass?

Centipede grass doesn’t respond well to high doses of fertilizer. Too much nitrogen will cause a flush of growth susceptible to disease, and phosphorus will deplete iron levels. Use a phosphorus-free fertilizer such as 15-0-15, with only about 2 pounds of nitrogen per 1000 square feet.

Does yellow grass mean too much water?

Too much water washes out nutrients that can leave the grass malnourished and yellow. Too little water or uneven irrigation causes dry yellow spots.

What causes brown patches in centipede grass?

Brown patch disease is one of the few living maladies that appears annually on centipedegrass, St. Augustine and to some degree zoysia. The culprit is a fungal pathogen named Rhizoctonia solani that becomes active when night temperatures drop to 70 degrees. Like most fungal diseases, brown patch needs moisture.

What does overwatering grass look like?

Signs of Overwatering the Lawn If your grass squishes a few hours after watering, that’s a sign. Dying patches of grass can also signal overwatering issues. Other symptoms include an abundance of weeds like crabgrass and nutsedge, thatch and fungal growth like mushrooms.

Is Scotts Turf Builder good for centipede grass?

Centipede grass lawns require very little nitrogen. In fact, too much fertilizer can harm them. Centipede grass should be fed once in mid-spring and again in mid-summer with a lawn food that releases its nutrients slowly over a 6 to 8 week period of time, like ScottsĀ® Turf BuilderĀ® Southern Lawn Food.

How do I make my centipede grass thicker?

Fertilize centipedegrass to encourage the formation of thick turf. Apply a nitrogen fertilizer once a year to improve the health of centipedegrass. Fertilizing more than once a year may actually damage centipedegrass by providing a soil environment too rich for this low-maintenance grass.

Does yellow grass mean its dead?

Look for patterns when determining if you have any yellow lawn diseases. Faded, yellow turf grass can also stem from disease or deficiency. Lack of nitrogen or iron will cause the green to fade. A soil test can indicate if there are any deficiency areas and then you can correct them with a plant food.

How do you get rid of brown spots on centipede grass?

Sometimes, there will be a ring of brown, dead grass surrounding a patch of green grass. To control brown patch, fertilize centipedegrass moderately in summer and if you irrigate, do it in very early morning. There are lawn fungicides available to control brown patch.

Why is my lawn turning yellow with Centipede?

Without seeing the lawn or knowing anything else, here are two things that can be potential problems for centipede: 1) The grass is very subject to iron chlorosis. This causes a continuing increase in yellowing throughout the growing season (from green, to yellow-green, to yellow) unless you apply an iron treatment.

What to do about brown patches on Centipede grass?

To control brown patch, fertilize centipedegrass moderately in summer and if you irrigate, do it in very early morning. There are lawn fungicides available to control brown patch. Read the label carefully and use the rate and timing that is indicated. HELMINTHOSPORIUM is a disease that is hard to pronounce but easy to find on centipedegrass lawns.

What are the symptoms of Centipede grass disease?

Yellow circles ranging from several inches to feet in diameter are the first symptoms of brown patch, followed by large circles of thin grass. The disease continues to cause grass decline even after it has been cured.

When do centipede die off in San Francisco?

Centipede decline presents as bright yellow or bare dead patches of grass in the spring and early summer, generally following excessively cold winters or usually warm winters with cold springs.