A. fumigatus grows on many materials, is present in compost, mulch and potting soil, and can cause health problems such as bronchitis and inflamation of the respiratory tract as it releases its spores into the air.
Airborne concentrations are highest when composting is done in an enclosed space.
Infection is rare. MSU is an affirmative action equal-opportunity instutution. Michigan State University Extension Programs and materials are open to all without regard to race, color, national origin, gender, religion, age, disability, political beliefs, sexual orientation, marital status, or family status. Arlen Leholm, Extension Director, Michigan State University, E. Lansing, MI 48824. This information is for educational purposes only.