Mushrooms
Mushrooms popping up in a lawn or garden bed are usually a sign of healthy soil biology, not a problem — they're simply the visible fruiting body of a fungal network already living in decomposing organic matter underground.
Why They Appear
Mushrooms typically follow a stretch of warm, wet weather, springing up wherever there's buried organic material — old tree roots, mulch, or decaying wood — for the fungus to feed on. Mulched beds are especially prone to mushrooms simply because they provide exactly the moist, decomposing material fungi thrive on.
In most cases mushrooms don't harm nearby plants and are actually a sign the soil's fungal network is helping break down organic matter into usable nutrients.
Caution: Never eat mushrooms found growing in the garden without expert identification — many toxic species look similar to edible ones, and some are dangerous even to touch and taste.
Reducing Their Appearance
Simply picking mushrooms as they appear, without disturbing the underground fungal network, is usually enough if their appearance is unwanted — they'll typically fade as the weather dries out. Removing buried wood debris like old stumps or roots addresses the underlying food source for a more lasting fix.