Trees are living organisms, and like all living things, they can get sick. One of the most common signs that something’s not quite right is the appearance of fungus or mold. Sometimes it’s harmless. Other times, it’s a red flag. Knowing when to call in a professional could mean the difference between saving your tree—or losing it.
So how do you know what you’re looking at, and when is it time to call an arborist?
Not All Fungus Is Bad… But Some Definitely Is
First, it’s important to know that not every mushroom or moldy patch means disaster. Some fungi are actually part of a healthy forest ecosystem, helping to break down organic matter in the soil and return nutrients to your trees. However, certain types of fungus indicate deeper problems like root rot or systemic disease.
The trouble is, harmful fungus doesn’t always start with big warning signs. Often it begins subtly: a patch of odd growth on the trunk, mushrooms at the base of the tree, discolored leaves, or branch dieback. If you’re seeing things that don’t look quite right, it’s better to have someone take a look before it becomes a larger issue.
Signs You Shouldn’t Ignore
If you notice any of the following, it’s time to call an arborist:
• Mushrooms growing at the base of the tree or along the trunk
• Black, white, or gray mold on leaves or branches
• Areas of decay or rot on the bark
• Sudden wilting or browning of leaves out of season
• A soft or spongy trunk
• Foul or unusual smells near the base of the tree
• Excessive leaf drop or canopy thinning
These can be signs of fungal infections and, in some cases, they indicate decay that’s been quietly working beneath the surface for years.
What an Arborist Can Do
When an arborist inspects a tree with suspected fungus or mold, the first goal is to figure out what you’re dealing with. Some infections are surface-level and treatable. Others are internal, affecting the vascular system of the tree—those are trickier and require a tailored approach. The arborist may recommend:
• Pruning out infected or dying limbs
• Improving airflow around the tree
• Mulching properly (not too much, not too close)
• Soil amendments or adjustments to watering practices
• In some cases, removal may be necessary to protect nearby trees
Whatever the situation, an arborist is not in the business of rushing to cut things down. The arborist’s job is to assess, advise, and act with the health of your trees and property in mind.
Don’t Wait Until It’s Too Late
The earlier you catch a fungal issue, the more options you have. Waiting often means more damage, more cost, and sometimes, no chance of saving the tree at all. If something looks off— even if it’s just a hunch—call an arborist to have them take a look. You don’t have to know what you’re looking at; that’s what arborists are here for.
Let’s Work With the Trees, Not Against Them
At Barren Tree Solutions, we believe in working with your trees, not against them. That means giving them the best chance to thrive, not just today, but long-term. If you see signs of fungus or mold and you’re not sure what to do, reach out. We’re here to help you make the right call for your trees, your yard, and your peace of mind.
Want us to take a look? Contact us or give us a call. We’ll help you figure out what your trees are trying to tell you.