Trees add beauty, shade, and value to your property—but when a tree becomes unstable, it can also become a serious safety hazard. Falling trees can damage homes, vehicles, fences, and power lines, and in severe cases, cause injuries. The good news is that most trees show warning signs long before they become hazardous.

Here’s how to tell if your tree may be at risk of falling and what some good next steps would be.

1. The Lean: How Much Is Too Much?

A slight lean is common, especially if a tree naturally grows toward sunlight.
But a sudden lean or a lean greater than 15 degrees is a major sign of instability.

Warning signs:

• The ground looks raised or cracked on one side of the trunk
• You notice the tree leaning more over time
• Strong winds recently pushed the tree over slightly

These symptoms often point to root failure—one of the leading causes of falling trees.

2. Root Problems: Hidden but Dangerous

Roots anchor a tree and absorb water and nutrients. When they’re compromised, the whole tree becomes vulnerable.

Red flags in the root zone:

• Mushrooms or fungal growth at the base
• Exposed or rotting roots
• Soil heaving, cracking, or sinking
• The tree moving slightly when pushed

If the roots are decayed or severed (often due to construction, trenching, or soil compaction), the tree may fall even without wind.

3. Trunk Damage: Cracks, Cavities, and Decay

A tree’s trunk gives it structural strength. When weakened, it can collapse unexpectedly.

Signs the trunk may be compromised:

• Deep cracks or vertical splits
• Cavities or hollows
• Peeling bark revealing soft wood underneath
• Oozing sap or sawdust-like frass from insects
• Large areas of missing bark (known as bark sloughing)

While some cavities are harmless, larger or deeper ones can indicate internal decay that needs professional evaluation.

4. Dead or Dropping Branches

A tree that sheds branches is under stress.
Dead limbs also shift weight unevenly and can break off during storms.

Take note if you see:

• Many dead branches concentrated on one side
• Large limbs hanging or snapped
• Upper canopy branches dying back (the “tree is dying from the top down”)

Dieback often signals root issues, pests, drought stress, or disease—all of which weaken structural integrity.

5. Fungal Growth & Decay Indicators

Not all fungi are harmful, but mushrooms on or around the base of a tree usually indicate internal rot.

Particularly concerning fungi include:

• Shelf or bracket fungi (conks)
• Large clusters of mushrooms at the root flare
• Soft, spongy wood near the base

These fungi break down wood fibers, making a tree more likely to fail.

6. Storm Damage & Previous Failures

Has your tree been through a severe storm? Has it lost big branches before?

A history of damage makes failure far more likely.

Watch for:

• Split crotches (V-shaped branch unions that have cracked)
• Bark torn away in storms
• Lightning scars
• Branches ripped out, leaving open wounds

Storm damage may look minor on the surface but can destabilize internal wood.

7. Location: Where the Tree Stands Matters

A tree’s environment influences its stability.

Higher risk areas include:

• Trees in newly cleared lots (no windbreak protection)
• Trees on slopes or eroding banks
• Trees with soil washed away around roots
• Trees above retaining walls or near recent construction

When a tree’s support system is altered, its stability often suffers.

When Should You Call an Arborist?

If you notice any of the above warning signs, especially more than one, contact a certified arborist for a hazard assessment. They can evaluate:

• Root health
• Internal decay
• Structural defects
• Soil conditions
• Overall risk to people and property

Tree failures can often be prevented with pruning, cabling, or removal when necessary—but only if the issue is caught early.

Don’t Wait for the Warning Signs to Become a Crisis

If you’re unsure whether your tree is at risk of falling, trust your instincts—something as simple as a professional inspection today can prevent costly damage tomorrow. Schedule a visit for an in-person visit from TreeDox today!