What is this stuff growing on the mulch of my rose garden?

There is a substance growing on top of the mulch in my rose garden. It first looks like light mustard or, sorry to be gross, light yellow spots of vomit. they range in size from 6 inch diameter to 12+ inch diameter. At first we thought that an animal may have been sick but the spots keep popping up. They start out looking like a dried liquid and the next day they expand and look like a puffy light yellow foam about half an inch tall. The sun will beat down on them for a day and they dry up and deflate. The whole process only takes a few days. The garden is in full sun in zone 6. Any ideas will be appreciated! Thanks a bunch!!! :)

What is this stuff growing on the mulch of my rose garden?
it's slime mold! harmless and funguscides are ineffective! check out the web site below for more info!
Reply:Sounds like a fungus or mold.





You might want to do a search.





http://www.blingo.com/
Reply:It's called Dog Barf Fungus(really!). It likes mulch. It won't hurt your roses. If you want to get rid of it, you'll need to scoop it out of the mulch. If you just want your bed to look good, you can stir it up into the mulch. Since they do dry out, I wouldn't worry about it.
Reply:It definitely sounds like slime mold. There are about 500 species of the primitive organisms. They contain true nuclei and resemble both protists and fungi.
Reply:It sounds like fungus, many mulches get that. I'm not sure how to get rid of it because I've never had this problem, hopefully someone here will have that answer for you.