Photostory #94: Canada Produces 5 Million Pounds a Year: Mushroom Business Mushrooms
National Film Board of Canada
February 26, 1957
Canadian Museum of Contemporary Photography fonds, National Gallery of Canada Library and Archives
Mushrooms thrive in the dark. About 24 days after planting they are ready for picking -- a job that is done by experts who move about in the semi-blackness wearing mining lamps. Two pounds per square foot is considered a good crop yield. The mushroom is a heavy soil feeder, requires a rich compost in which to grow.