Winter storms blowing in along the Shannon estuary can bring down trees that looked perfectly healthy in summer. Most unsafe trees do show warning signs first, though — if you know what to look for. These are the main ones.
1. A lean that’s new or getting worse
Plenty of trees grow at an angle and stand for decades. What’s worrying is a lean that has appeared recently or is increasing, particularly if the ground on the far side is cracking or heaving.
2. Splits in the trunk or between stems
Deep cracks running up the trunk, or splits where two large stems join in a tight V-shape, are weak points that can give way under wind or the weight of a full canopy.
3. Dead wood and hanging branches
Dead branches turn brittle and can fall without warning. A broken limb still lodged in the crown — a “hanger” — is especially dangerous and needs dealing with quickly.
4. Fungi, soft wood and cavities
Mushrooms or bracket fungi on the trunk or around the roots often point to decay inside. Hollows and soft, crumbling wood are further signs.
5. Symptoms of ash dieback
Ash dieback is now found right across Ireland. Look for thinning leaves and dead twigs at the top of the crown and dark patches on the bark. Infected ash becomes brittle, so trees near homes, roads and footpaths should be checked.
6. Disturbed roots
Trenching, a new driveway or building work close to a tree can damage its roots, and the effect on its stability may not show for several years.
If you spot any of these
- Keep people, pets and cars clear of anything that could fall.
- Don’t climb the tree or try to cut large limbs yourself.
- If branches are near power lines, contact ESB Networks first.
- Book a free assessment — or phone us straight away if it’s urgent.
