Red-Oozing Yellow Fungus in Mulch: Harmless Slime Mold

Yellow "throw-up" fungus in mulch with red ooze (looks like blood) drying black. Mulch applied month ago. Concern for 9-month-old grandsons.

Identification: Slime Mold (Fuligo septica or related)

• Not a true fungus—protist.
• Feeds on bacteria/decomposing mulch.
• Red phase = spore production (some species).
• Dries to black powder = spores.

Safety

Harmless to humans, pets, plants. Spores airborne if disturbed—wear mask if raking. No toxic risk.

Management

• Ignore it—disappears when weather dries.
• Or: Scoop up and discard (bag it).
• Or: Spray copper fungicide (kills spores).
• Don't over-mulch (>2-3 inches).

Common after rain on fresh mulch. Grandkids safe.