That doesn’t automatically mean you need to stop mulching your grass. It simply demonstrates how active the decomposition process can be.
Fallen Leaves Could Be Part of the Reason Leaves provide another source of food for fungi.
When leaves accumulate in garden beds, beneath trees, or around the edges of a lawn, fungal organisms begin breaking them down.
Even after the leaves disappear from sight, fungal activity can continue underground.
A sudden appearance of mushrooms after periods of wet weather may therefore be connected to the decomposition of leaves and other plant debris.
An Old Tree May Still Be Affecting Your Lawn Did you remove a tree from your property several years ago?
If so, don’t be surprised if mushrooms continue appearing around the former location.
Large roots can take a long time to decompose.
As fungi colonize the remaining wood, they may eventually produce mushrooms above ground.
In other words, a tree that disappeared from your yard years ago may still be influencing what happens beneath your grass today.
Your Soil Is Home to an Active Fungal Community Soil isn’t just dirt.
It contains
an enormous community of microorganisms, including bacteria and fungi, along with plant roots, insects, worms, and other organisms.
Fungi are particularly important because they help break down complex organic materials.
Some fungi form extensive networks of thread-like structures called hyphae, which collectively form a structure known as mycelium.
Much of a fungus can exist in this hidden form without producing mushrooms.
When conditions become favorable, however, the familiar mushroom caps may appear.
Some Fungi Help Plants Access Nutrients Not all fungi simply feed on dead material.
Some fungi form relationships with living plants, particularly through associations with plant roots.
These relationships are known as mycorrhizae.
In a mycorrhizal relationship, fungal networks can extend through the soil and interact with plant roots. The plant provides the fungus with carbon compounds, while the fungus can help increase access to certain nutrients and water.
These relationships are an important part of many
natural ecosystems.
So the presence of fungi isn’t automatically something that should be viewed as harmful.
Your Lawn May Be Part of a Much Bigger Ecosystem A perfectly green lawn can look simple from above.
Underneath, however, an entirely different world is operating.
Grass roots are interacting with soil organisms. Organic matter is decomposing. Fungal networks are spreading. Insects and worms are moving through the soil.
