5 Signs Your Tree Needs Professional Attention

Trees are resilient organisms, but they don't always show distress in obvious ways. By the time a tree fails, the warning signs may have been present for months or even years. Knowing what to look for can help you address problems before they become emergencies — and potentially save a valuable tree.

1. Mushrooms or Fungal Growth at the Base

Fungal fruiting bodies (mushrooms, conks, or brackets) growing at the base of a tree or on surface roots are one of the most serious warning signs. These indicate internal decay in the root system or lower trunk. The fungus is feeding on dead or dying wood inside the tree, compromising its structural integrity. Not all fungi are equally dangerous, but any fungal growth at the base warrants an evaluation by a certified arborist.

2. Cracks or Splits in the Trunk

Vertical cracks in the trunk, especially those that extend deep into the wood, indicate structural weakness. Frost cracks, lightning damage, and included bark in branch unions can all create failure points. If you notice a crack that seems to be widening over time, or if you can see into the interior of the trunk through a crack, the tree needs professional assessment immediately.

3. Dead Branches in the Upper Crown

A few small dead twigs are normal, but large dead branches — especially in the upper canopy — signal that something is wrong. This pattern, sometimes called "staghead," can indicate root problems, disease, or environmental stress. Dead branches also pose a direct hazard: they can fall without warning, particularly during wind or ice events.

4. Leaning That Has Changed

Many trees grow with a natural lean, and that's perfectly fine. The concern arises when a tree that was previously straight starts leaning, or when an existing lean becomes more pronounced. A sudden or progressive lean often indicates root failure on the opposite side. Look for soil heaving, cracked pavement, or exposed roots at the base on the side opposite the lean.

5. Bark Falling Off in Large Sections

While some species (like sycamore and birch) naturally shed bark, large sections of missing bark on other species often indicate dead cambium — the living tissue just beneath the bark. This can result from disease, physical damage, or environmental stress. If more than about 25 percent of the trunk circumference has lost bark, the tree's long-term outlook may be poor.

When in Doubt, Get an Expert Opinion

If you notice any of these signs, don't wait for the next storm to find out if there's a problem. A certified arborist can perform a thorough risk assessment and recommend appropriate action — whether that's monitoring, treatment, pruning, or removal.