Frequently asked questions

What causes fairy rings to appear on fairways and sports fields?

Fairy rings are caused by soil-dwelling basidiomycete fungi that colonise dead organic matter in the soil and thatch layer. They develop radially outward from a central point, producing visible rings or arcs that may appear as stimulated dark-green growth (from nitrogen released by fungal decomposition), zones of dead or stressed turf, or rings of mushroom fruiting bodies. Sandy soils with high organic matter content, common on golf course fairways and tees, are particularly susceptible.

Why is fairy ring so difficult to manage compared to other turf diseases?

The fungal mycelium creates a dense, hydrophobic zone in the soil profile that repels water and prevents moisture from reaching turf roots within the ring. Standard fungicide surface applications struggle to penetrate this waxy mycelial barrier. The fungi can persist for years in soil organic matter and extend to over 30 metres in diameter. Effective treatment requires breaking down the hydrophobic layer with wetting agents and achieving deep soil penetration of fungicide rather than relying on standard foliar spray techniques.

What is the recommended treatment protocol for active fairy ring on maintained turf?

Treatment requires a combined cultural and chemical approach, including wetting agents to break the hydrophobic barrier, core aeration through the affected zone, and fungicide applied at high water volumes to reach the active pathogen in the soil. Multiple treatment cycles are often necessary. Contact Greenway Turf Solutions for a site-specific treatment plan and product recommendations.