Not sure whether that tree in your garden just needs a trim, or whether it’s actually becoming a hazard? Knowing the warning signs can save you from a costly emergency later — and in the worst cases, protect your family, your property and your neighbours. Here are seven signs our tree removal Sheffield team looks for during every assessment.

1. Large Dead or Bare Branches

A few dead twigs are normal, but large bare branches with no leaves during the growing season often signal a bigger problem underneath — disease, root damage, or a section of the tree that’s already dying back.

2. Fungus Growing at the Base or Trunk

Bracket fungi or mushrooms growing on the trunk or around the base are a strong sign of internal decay. By the time fungus is visible, the wood inside may already be significantly weakened, increasing the risk of the tree falling in high winds.

3. Deep Cracks or Splits in the Trunk

Vertical cracks, splits or included bark (where two branches grow too closely together) create structural weak points. These can widen over time and lead to sudden, unpredictable failure — especially during storms.

4. Leaning Trees, Especially After a Storm

A tree that has recently started leaning, or one with exposed or lifted roots on one side, may have a compromised root system. This is one of the most urgent warning signs and should be assessed by a professional as soon as possible.

5. Hollow or Rotting Trunk

Not every hollow tree is dangerous, but combined with other signs — thinning canopy, fungus, or leaning — a hollow trunk significantly increases the risk of collapse and should always be professionally assessed.

6. Pest Infestation or Bark Damage

Bore holes, peeling bark, or visible insect activity can indicate a tree is in serious decline. Some pests accelerate decay rapidly once they take hold, particularly in already-stressed trees.

7. Proximity to Buildings, Power Lines or Driveways

Even a healthy tree can become a liability if it’s grown too close to a structure, boundary or overhead line. In these cases, careful tree felling and removal, or a managed reduction, may be the safest long-term solution, particularly for larger, mature trees.

What to Do If You Spot These Signs

Never attempt to remove or cut back a large or potentially hazardous tree yourself. Contact a fully insured, qualified team for an assessment. If a tree has already come down or is causing immediate danger, our Emergency Tree Services team is available 24/7 across Sheffield and the surrounding areas. For trees that simply need monitoring, our Professional Tree Survey Reports give you a clear, documented risk assessment.

Frequently Asked Questions

How do I know if a tree needs to come down completely?

A tree may need full removal if it is dead, severely diseased, structurally unstable, or poses an unavoidable safety risk to people or property. Our team can assess and advise on the best course of action.

Is it always necessary to remove a leaning tree?

Not always — some trees lean naturally due to light or wind exposure. A professional assessment can determine whether the lean is a long-term natural growth pattern or a sign of root failure.

What should I do about a storm-damaged tree?

Do not attempt to dismantle or move damaged limbs yourself. Contact a qualified tree surgeon immediately — we provide 24/7 emergency tree services across Sheffield for fallen or hazardous trees.

Will removing a large tree damage my garden?

Our team uses protective measures and, where needed, sectional dismantling or rigging to minimise disruption to your garden, driveway and surrounding property.

Get a Free Quote From Sheffield’s Trusted Tree Surgeons

Tree Service Sheffield offers fully insured, LANTRA/NPTC-certified tree surgery across Sheffield, Rotherham, Barnsley, Chesterfield, Worksop and South Yorkshire. Call our team today on 0114 697 3325 or request a free written quote online — no obligation, fast response.

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