A tree can look perfectly fine from a distance, green, leafy, and standing tall, while hiding serious problems beneath the surface. As a tree surgeon in Cork, we’re often called out after a storm to deal with trees that seemed completely healthy right up until they failed. Here are five warning signs worth knowing, even if your tree looks in great shape.
1. Fungal Growth at the Base or on the Trunk
Mushrooms or bracket fungi growing on the bark or around the roots are often a sign of internal decay. By the time fungus is visible, the rot inside the trunk or root system may already be well advanced, even if the canopy above still looks lush.
2. Cracks or Splits in the Trunk or Major Limbs
Cracks running along the trunk, or a split where a large branch meets the trunk, can indicate structural weakness. These areas are prone to sudden failure, particularly during high winds, which are no stranger to Cork’s coastal weather.
3. Leaning That’s Recent or Getting Worse
Some trees naturally grow at a slight angle, but a lean that’s developed suddenly, or one accompanied by lifted soil or exposed roots on one side, can mean the root system is failing to anchor the tree properly.
4. Dead Wood in the Canopy
A few dead branches scattered through an otherwise healthy-looking crown are more common than people think. Deadwood is brittle, unpredictable, and can drop without warning, making it a real hazard if the tree overhangs a driveway, garden, or roof.
5. Cavities or Hollow Sounds in the Trunk
Tap the trunk and listen. A hollow-sounding thud can indicate internal decay, even when the outer bark looks completely intact. Woodpecker holes or visible cavities are another giveaway that the tree’s structural integrity may be compromised.
When in Doubt, Get a Professional Opinion
None of these signs are always a cause for immediate removal, but they’re all reasons to get a proper assessment. A qualified arborist can look beyond the obvious and tell you whether a tree needs monitoring, remedial pruning, or removal altogether.
At Cork Tree Surgeons, our certified team carries out thorough tree safety assessments across Cork city and county, giving you peace of mind about the trees on your property. If you’ve spotted any of these signs, or simply want a professional opinion, contact us today for a free consultation.