Images

Pink and Grey Snow Mold

Irregular patches of dead turf. Irregular patches of dead turf characteristic of both gray and pink snow mold infections. This photo show both types of infection. The circles with a pinkish hue are pink snowmold, those with a lighter (almost bleached) appearance are gray snow mold infections.
Close-up of snow mold infections. Close-up of snow mold infections. Both gray and pink infections are shown. Those with pink borders are pink snow mold and those lighter infections with less marked lesions are gray snow mold infections.

 

Spore masses produces by the pick snowmold fungus. Arrows indicating sporodochia (spore masses) produced by the pink snowmold fungus, Fusarium nivalis.
Hyphal mat produced by the gray snowmold fungus. Hyphal mat produced by the gray snowmold fungus, Typhula spp. Dead patches of grass, usually with a gray-white hyphal mat are key symptoms of a gray snowmold infection. Also, with small sandgrain-sized brown fungal sclerotia are evident imbedded in the dead leaf tissue.
Patch of infected grass. Patch of grass infected with the gray snowmold fungus. Affected grass will appear matted.
Advancing border of infected turf. Advancing border of turf infected with a snowmold fungus. Presence of fungal hyphae (center) indicates an active infection.

 

Melting Out

Thinning and necrosis of grass. Thinning and necrosis of grass, common when Melting Out fungi are infecting the plant tissues.

 

 

 

Melting out lesions. Characteristic Melting Out lesions indicated by the arrows. Lesions are brownish-purple and circular to oval in shape with straw colored centers.

Fairy Ring

Fairy Ring Fairy Ring with active fungal reproductive structures (mushrooms). Fairy rings will normally appear in circles or arcs, and radiate out from the initial affected point.
Active edge of the fairy ring. Circle of dark green grass as indicated by the arrow shows the active edge of the fairy ring. Vegetative portions of the causal fungus will continue to radiate outward periodically producing mushrooms.