Some have described dog vomit slime mold’s appearance as looking like that expanding foam used to fill cracks and gaps in walls around the house. It has no definite shape and will appear as a small irregular mound less than an inch in height and anywhere from around an inch to over a foot in diameter.
Dog vomit slime mold appears overnight and can grow on lawns, mulched areas, compost piles, bare soil, tree stumps and old logs. It basically feeds on any decaying plant matter.
Fuligo septica, or dog vomit slime mold, begins as a bright yellow, gelatinous growth, but fades to a sickly orange brown as it matures.
Courtesy of Mississippi State University
Some have described dog vomit slime mold’s appearance as looking like that expanding foam used to fill cracks and gaps in walls around the house. It has no definite shape and will appear as a small irregular mound less than an inch in height and anywhere from around an inch to over a foot in diameter.
Courtesy of the University of Maine
Dog vomit slime mold appears overnight and can grow on lawns, mulched areas, compost piles, bare soil, tree stumps and old logs. It basically feeds on any decaying plant matter.
Question: About a month ago, right before the weather became chilly, I noticed this weird growth in my mulched areas. The best way to describe it is a yellow foamy mass. My first thought was that an animal got sick in my yard, but as the mass increased in size each day, I came to the conclusion that was not the case. After awhile, it turned brown and dried up naturally. What is this weird looking stuff?
Do you have a gardening or insect question? Contact the Douglas County Master Gardeners at douglasmg@oregonstate.edu or 541-672-4461 or visit 1134 SE Douglas Ave., Roseburg. Douglas County Master Gardeners are trained volunteers who help the OSU Extension Service serve the people of Douglas County.
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