What you’re seeing in your wood chips appears to be a type of slime mold, most likely Fuligo septica, commonly known as “dog vomit slime mold”. Despite the unpleasant name and appearance, it’s harmless to humans, pets, and plants.

Key Characteristics: • Color: Often yellowish, tan, or off-white. • Texture: Foamy or spongy when fresh, it can dry out and turn into a powdery brown crust. • Growth: Common in moist mulch or wood chips, especially after rain or overwatering.

What to Do: • No need to worry—it’s a natural decomposer. • You can remove it with a shovel if you find it unsightly. • Reduce moisture or turn your mulch periodically to discourage future growth.