June 11, 2016
My son has an orange fungus or something on the mulch in his flower bed. Some mornings he says it has spread across most of the bed. If water is poured on it, a "smoke" goes up. Do you know what this is?
We have seen a lot of slime mold this year with all the rain and humidity. Slime mold is also called dog vomit fungus. It can come in a lot of colors including orange, yellow, green and even blue. The “smoke” that you see coming off of it, is actually the fungal spores. These fungi feed on decaying organic matter, bacteria and yeasts, so they can be common during warm, wet conditions on mulch. Thankfully they look worse than they are. Just hose it down or use a rake to turn the mulch. When it dries out, they won’t be around.
I have what I think might be a fungus growing under my hosta plants. It looks like melted parmesan or mozzarella cheese. Do you know what it is and how I get rid of it?
It is slime mold. Slime molds produce relatively large, single-celled bodies called plasmodia. Plasmodia are the feeding stages of slime molds, and they are frequently seen on lawns, mulch, and decaying wood in summer. Just remove it or lightly turn the soil. It can grow back when conditions are right for it. Slime molds don't harm plants but they aren't the most attractive thing either. They will eventually break down and disappear.
All links to external sites open in a new window. You may return to the University of Arkansas Division of Agriculture web site by closing this window when you are finished. We do not guarantee the accuracy of the information, or the accessibility for people with disabilities listed at any external site.
Links to commercial sites are provided for information and convenience only. Inclusion of sites does not imply University of Arkansas Division of Agriculture's approval of their product or service to the exclusion of others that may be similar, nor does it guarantee or warrant the standard of the products or service offered.
The mention of any commercial product in this web site does not imply its endorsement by the University of Arkansas Division of Agriculture over other products not named, nor does the omission imply that they are not satisfactory.