White button mushrooms are usually grown in darkness, but other types of mushrooms require some indirect light, including mushrooms grown on logs or from kits. Never expose growing mushrooms to direct sunlight.
About this Author
D.M. Cameron was a journalist and editor for wire services, newspapers and magazines for more than 20 years. In addition to editing and ghost-writing non-fiction books, Cameron now writes for several websites and trade journals. Cameron's degrees include a Bachelor of Arts in journalism from Penn State.