You have probably noticed the dark green rings on some of the putting greens. They are called fairy rings. It is caused by fungi that decompose organic matter in the soil. These fungi are harmless to the grass. However, the fungi produce a substance that repels water. Therefore, the grass in these areas becomes stressed from a lack of water.
Solutions
- In the short-term to get water to penetrate these areas- hand water with a hose, wetting agents, and poking holes with a hand probe.
- In the long-term, apply products that help minimize these fungi.
A year from now, you should see these fairy rings greatly reduced in Timarron's putting surfaces!