Knowledgebase
Round white balls found in soil #281907
Asked October 01, 2015, 10:37 AM EDT
Washington County Minnesota
Expert Response
The fungi live off dead organic matter and are commonly found in mulched areas in the landscape. Stinkhorns start off as an egg-like, golf ball-sized structure in the soil. As the fungus develops, a stalk grows upward and is topped with a slimy cap coated with a mass of olive green to brown spores. The putrid smell of the stinkhorn cap attracts flies and other insects.
Learn more here (despite the caption, the video shows stinkhorn growth, not grape aspergillus):
http://www.plantpath.cornell.edu/PhotoLab/TimeLapse2/DogStinkhorn_credits1_FC.html
Stinkhorns are not poisonous or harmful to plants or people. Eventually, the stinkhorns wither away and disappear. Individuals can rake up and discard the fungi if their appearance or smell is bothersome.