Thick White Fungus Around Ferns and Roses: Nuisance or Threat?

Question: Thick white mushroom-cap fungus spreading around ferns, rose bush, covering soil. Cut ferns down. What is it? How to eliminate?

Nature of the Fungus

Visible caps are reproductive structures; most fungus is underground. These fungi aren't normally harmful—just a nuisance. They grow in decomposing organic matter (mulch). Can indicate excessive moisture leading to root rot (unseen).

Action

If plants dying, take sample (top, roots, soil) to garden center for correct fungicide. If plants healthy, break up soil surface frequently to prevent mushroom formation—problem may resolve.