QUESTION: “A couple of mornings ago, I noticed a strange yellow clump of something had appeared, apparently overnight, in one of our flower beds. It was a bright, almost neon, yellow and very moist and slimy. It looked almost like some kind of alien being! “By the next day, it had formed a skin or crust on top and was turning brown. It now looked like a very large, stale egg foo yong! The following day, a second patch appeared, about six feet away in the same bed. Is this some kind of fungus? I am planning to remove the two clumps with a shovel and replace the mulch. But I'd also like...