How to Tell If a Tree
Is a Fall Hazard

A falling tree is one of those disasters you don't see coming until it's too late. But trees telegraph their problems if you know what to look for. Most hazardous trees show clear warning signs months or years before failure.

Learning to spot danger means you can address problems before they become emergencies. And emergencies with falling trees are expensive and dangerous.

The Lean Test

Trees grow straight by default. A lean means something is wrong. Recent lean is worse than long-standing lean. A tree that's leaned the same way for 20 years and survived might be stable. A tree that started leaning last year is probably failing.

Check the root plate. Does soil bulge on the low side of the lean? Is the tree pulled up on the high side? That's a lifted root plate, which means roots are losing contact with soil. Failing roots can't anchor the tree anymore.

A lean toward structures, your house, garage, neighbor's house, increases risk. Even if the tree survives, it's on a timer. Removal becomes the safe choice.

A lean away from structures is lower priority, but still worth monitoring. Document the angle with a photo. If it gets worse over months, the tree is actively failing.

Visible Cracks in the Trunk

A crack running vertically down the trunk means the wood is splitting under internal stress. That's a structural failure in progress. The tree can't hold itself together much longer.

Cracks around old pruning wounds are red flags. Heavy pruning that removed major limbs can stress the trunk as the tree rebalances. A cracked old wound never fully heals.

Seeping cracks that ooze sap or dark liquid indicate decay inside. The tree is literally rotting from within, and the crack is where the decomposition is breaking through.

Horizontal cracks are worse than vertical ones. Horizontal cracks split wood grain, which weakens the structure considerably. Vertical cracks are bad, but the wood fibers still interlock somewhat.

Dead Limbs and Dead Sections

A tree with significant dead wood is declining. Small dead twigs are normal, trees drop branches. But if 25% of the crown is obviously dead, the tree is in trouble.

Dead branches become brittle. Storm winds snap them instead of bending them. A dead branch over your house or car is a hazard waiting for the next thunderstorm.

Dead sections on one side of the crown indicate disease, root damage, or vascular problems. If the problem is progressing, the entire tree might be failing.

Hollow Trunks and Cavities

A hollow section in the trunk means internal decay has eaten through the heartwood. The trunk is like a hollow pipe, it looks functional but has lost structural integrity.

Inspect the trunk for holes, cracks, and soft spots. Press a knife point gently into the bark. Sound wood resists. Soft, spongy bark means decay underneath.

Large cavities that you can see through the trunk mean the tree has lost critical structural support. These trees are candidates for removal. Even if they're stable now, the decay will progress.

Soil and Root Plate Changes

Check the soil around the base. Heaving, where the soil bulges upward around the tree, means the root plate is lifting. Roots are losing the anchor they need.

Compacted soil or construction near the tree damages roots. Excavation for utilities, building, or grading can sever critical roots. A tree with damaged roots can't hold itself upright during wind.

New cracks in the soil radiating from the tree base indicate the root plate is lifting. That's a late-stage warning sign.

Multiple Hazard Indicators

One warning sign might be manageable. Multiple signs together spell failure.

A tree with a recent lean, some dead limbs, visible cracks, and a lifted root plate is failing. The combination means structural problems are compounding. Removal is the safe answer.

A tree with just dead limbs but good trunk and stable roots might recover with proper care and pruning. Context matters. An arborist can assess the total picture.

The Target Zone Concept

Even a healthy tree can be hazardous if it's in the wrong location. Define the target zone, what would the tree hit if it fell?

A tree hanging over your deck, garage, or house is high-risk regardless of health. A tree near power lines is hazardous because falling branches can cause outages or electrocution risk.

A tree above a frequently-used pathway or children's play area is dangerous. The stakes are higher than a tree in an open yard.

Target zone assessment combines tree condition with consequence. A poor-condition tree in an open yard might be okay to monitor. The same tree over your house is removal territory.

Trust Your Gut

If something looks wrong, it probably is. Unusual lean, strange bark damage, sudden canopy thinning, these catch the eye for a reason.

Document your concerns with photos and dates. If the tree worsens, you have a record. If you're uncertain, get a professional opinion rather than guessing.

Professional Assessment

An arborist can assess structural integrity with precision. They can identify decay you can't see, evaluate stability, and give you clear options.

Elite Tree Service provides free assessments across Gurdon and the surrounding region. If you're concerned about a tree's safety, one call gets you expert evaluation and a clear recommendation.