There are two groups: - Stimulation of turf, green circular areas, turf usually higher than surrounding turfgrass. - Enlarged, bleached and straw-like coloured areas. The centre of the circle is not affected, and rings can be 1 to 60 m wide. Fruits, for example mushrooms, can be seen around the perimeter of the circle particularly during moist, rainy conditions.
Fairy ring favours warm weather, dry soil, nutrient deficient soils and high levels or organic matter. The disease is commonly seen between October and January. Fairy ring can stay visible within the latter period year after year.
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