Dollar Spot Fungus
What is Dollar Spot Fungus?
- Dollar spot appears in Bermuda and Zoysia lawns
- It is round, brown to straw-colored
- The size of the infected area can be from one to several inches in diameter. It starts out about the size of a silver dollar, thus the name “dollar” spot.
What causes Dollar Spot Fungus?
- Low soil moisture
- Heat stress from walkways and driveways,
- poor mowing practices,
- compact soil
- Weak root systems
- Watering during the afternoon and early evening. Watering at this time can cause fungus issues because in high humid areas you want to cut down on the time your grass spends wet/humid in heat. At night the water sits longer on the grass and is not absorbed faster. So mix this with high humidity it encourages fungus and/or disease.
- Heavy Thatch layers– Several turfgrass pathogens can survive in the thatch layer, including those that cause summer patch, leaf spot, and melting-out diseases. Heavy thatch may also lead to fairy ring problems. Bermuda grass, Kentucky bluegrass, and kikuyugrass produce more thatch than most other turfgrasses and require regular dethatching.
- Infrequent mowing- Maintaining a lawn at the recommended mowing height will improve its ability to resist diseases and give it a greater aesthetic appeal. The frequency with which the lawn is mowed should be based on the growth rate of the grass. Lawns should be mowed often enough so that no more than one-third the length of the grass blade is removed at any time. Removing too much of the grass blade can increase the susceptibility to several diseases by depleting food reserves in the plant, making it difficult for the plant to recover from stress and injury.
- Dull mower blades- Maintain sharp mower blades to avoid mechanical damage to turf. Dull mower blades rip the grass blade instead of cutting it clean which opens up the grass blades to diseases like fungus.
How to reduce the risk of Dollar Spot Fungus?
- Proper watering and mowing practices.
- Keeping your lawn at a good height and making sure that you are aerating yearly.
- Establish a good fertilization and weed control program.
However, even still with all the proper watering, mowing and lawn care practices you may still get a fungus and need to get a fungus fungicide treatment. If this happens just give us a call and we will take care of the rest.