Features

• In its natural environment, artillery fungus breaks down woody plant tissues. It commonly forms on the decomposing organic matter in mulch. Artillery fungus appears as a minuscule, creamy white or brownish-colored, cup-shaped fungal body that contains a mass of black fungal spores.
  
  

Effects

• Mulch that is infected with artillery fungus has a matted texture and may appear to have a lighter color than the mulch in surrounding areas. The fungal bodies on the mulch release sticky black fungal spores that adhere to the sides of houses and cars, leaving unsightly black spots on surfaces. These spores are difficult to remove without causing surface damage or leaving unattractive stains.
  
  

Considerations

• No chemical controls are available for artillery fungus, as of 2011. Gardeners control infestations by substituting rocks or plastic materials for wood-based mulches, particularly in areas near homes or vehicles. They also rake up and remove infested mulch or use pine bark rather than hardwood mulches.