Noticed a similar fungus near my daylillies only this was yellow. Did look like melted marshmallows, up to an inch thick and appears to be only on top of the soil. I attributed it to all the rain we had last week.

It was half on tripple shredded hardwood mulch spred in the early spring and soil ammended with lots of leaf mulch. It did spread to bare soil on one end. Sorry I didn't get a picture before removing it!

Both of these sound like one of the many slime fungus, a totally harmless but unsightly organism. If so, fungicides are not warranted. Images would help, of course.

Slime molds come in a wide variety of colors and textures, and are often found growing on mulch, though that is not a prerequisite. Some species will actually move around as it develops, even crawling over sidewalks, etc.

Cuz'n Dorie nailed it. Slime mold, frequently referred to in lay terms as "dog-vomit fungus". Neat stuff, if unsightly, and non-hazardous, to boot.

Great news, thank you. I simply scraped up what I could and tossed it in the way back woods. The dog-vomit fungus is a perfect description.

Is this it?

I discovered this today! How do I prevent it