Yep, you read that title right. Dog Vomit Fungus. My garden has it ALL OF THE PLACES!!! Also known as scrambled eggs fungus, it basically looks like the dog was sick all over the place. I’ve taken up calling it mulch puke.
Technically a slime mold, dog vomit fungus usually appears in clumps, growing on mulch, the bases of rotting tree trunks, or other wooden objects. It is most often found in moist, shady areas. We’ve had small spots of it earlier this spring, but today is was everywhere. Why it decided to colonize on the first almost 100 degree day we had, I don’t know, but apparently my garden is a desirable place for it.
Slime molds reproduce by spores that travel by wind. Apparently, they are very resistant, and can survive even during hot, dry weather. The spores can remain viable for several years, waiting for conditions to be right. When conditions are ideal, dormant spores absorb moisture and crack open to release a swarm sphere, and shortly after, the dog vomit appears. It is light yellow when its young, and textured like cauliflower or those old-school Magic Crystal Gardens. As it ages, it turns more brown and firm, eventually developing these yellow streaks that look like gel icing or egg yolk, which I’m pretty sure are the reproductive organs.
Normally I don’t care about fungi that show up in my yard; I actually get excited because it means my soil is alive. Fungus and mushrooms are not diseases, but are organisms that are eating decomposing materials. While not fungi, this slime mold plays the same ecosystem roll. Since I use lots of arbor mulch, I’m not surprised to find it eating up my pathways. One more factor that is improving my soil! In addition to my mulched paths, I’ve also found it on top of the soil in my beds and on the edges of the beds.
Although rare, dog vomit can smother plants if the colony gets big enough. I’m observing it spread right over some of my seedlings and plants, but they seem to be doing fine. The recommendations for getting rid of it is to change out the mulch, or rake out the best you can. It isn’t toxic, so all of that seems way to much effort for something not that big of a deal, that probably won’t go away anyways. So other than poking at it with a stick and proclaiming how weird it is, I’m just letting it be. If you come by my house, don’t worry, Stella is as healthy as can be. Its just the dog vomit fungus!