When should a tree be removed?

An arborist should remove a tree when it poses a safety risk, is unhealthy beyond recovery, or is causing significant structural or environmental problems. Here are some key reasons for tree removal:
Safety Hazards

• Dead or dying tree – If a tree is completely dead, it’s at high risk of falling.
• Severe structural damage – If a tree has large cracks, split trunks, or weak branch unions, it could collapse.
• Leaning dangerously – A sudden lean or excessive tilting may indicate root damage or instability.
• Storm damage – If a tree is severely damaged by wind, lightning, or ice, it may not be safe to keep.

Disease or Infestation

• Widespread decay – Mushrooms at the base, hollow trunks, or brittle branches can signal internal rot.
• Pest infestations – Severe infestations (e.g., emerald ash borer, termites, or bark beetles) may make removal necessary.
• Fungal infections – Diseases like oak wilt, Dutch elm disease, or root rot can make a tree unsalvageable.

Root or Structural Issues

• Damaging foundations or sidewalks – If roots are cracking foundations, driveways, or underground pipes, removal might be the best option.
• Uprooting – If roots are lifting out of the ground or are exposed due to soil erosion, the tree may be unstable.

Crowding or Poor Location

• Too close to structures – Trees growing too close to houses, power lines, or other trees can become a liability.
• Blocking views or sunlight – If a tree is negatively impacting landscaping, gardens, or solar panels, it may need removal.

Tree Is No Longer Viable

• Declining health over time – If more than 50% of the tree is damaged or declining, recovery may not be possible.
• Non-native or invasive species – Sometimes, removing invasive trees can benefit the surrounding ecosystem.

Before removing a tree, it’s best to consult a certified arborist, as they can assess if removal is the best option or if the tree can be saved through pruning, cabling, or treatment.

This ash failed in a windstorm, notice the discolored decay in the center of the trunk.

Mushrooms can indicate root rot, and a potential hazard.

Major crack and decay in a large cottowood limb.

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