Yes, a tree can sometimes recover from lightning damage, but it depends on how severely the strike has affected it. Some trees survive with a scar on the trunk. Others suffer damage to their bark, branches or internal tissues and decline over the following months.
It is not always possible to judge the damage from the ground. A tree may have a visible mark where lightning struck, while the full extent of the injury is hidden beneath the bark or higher in the canopy. If a tree in your garden has been struck, keep your distance from any unstable branches and arrange a professional assessment before deciding what to do.
Hanwell Tree Care can help property owners in Dorset, Poole, Wimborne, Parkstone, Broadstone, Ferndown and Verwood understand their options after a strike.
What happens when lightning strikes a tree?
Lightning releases an intense electrical charge. When it strikes a tree, the energy may damage the bark and wood as it travels down the trunk. A severe strike can force strips of bark away, leave a furrow in the trunk or split the tree. The damage can also extend along a surface root.
Not every strike leaves an obvious mark. Some affected trees show few immediate signs, then develop dead branches or a thinning canopy over time. The Forestry Commission’s research note on lightning damage explains that these gradual symptoms can be difficult to distinguish from those caused by root disease without careful examination.
Signs that a tree may have been struck
After a storm, look for changes from a safe distance. Possible signs include:
- A strip of missing, split or loosened bark running down the trunk
- A crack or furrow in the trunk, or a split between major stems
- Broken branches or pieces of wood beneath the tree
- Leaves turning brown or wilting on one branch or across part of the canopy
- Branches dying back over the weeks or months after the storm
- A change in the tree’s lean or signs of disturbed soil around its base
These signs do not prove that lightning caused the damage. Weather, disease and other tree problems can produce similar symptoms. A qualified tree professional can inspect the trunk, branches and surrounding ground to help identify what has happened.
What affects a tree’s chances of recovery?
The outcome depends on the extent and position of the damage, as well as the tree’s condition before the strike. A healthy tree with a limited area of injury may have a better chance of surviving than one with a large split or extensive damage to its main stem.
The condition of the crown and root system matters too. A tree can lose some branches and continue to grow, but serious structural damage may leave it unsafe even if it still has leaves. Damage to major roots may also affect the tree’s stability and ability to take up water.
A tree with a deep trunk split, large areas of missing bark or substantial branch loss needs a prompt assessment. Some trees with severe damage die quickly. Others decline gradually, so an apparently healthy canopy immediately after the strike does not always mean the tree has recovered. The Forestry Commission notes that serious lightning damage can lead to death at once or within a few months, while some damaged trees do survive.
How can you tell if a tree is recovering?
New leaf or shoot growth in the next growing season can be encouraging, but it does not confirm that the whole tree is healthy or structurally sound. A damaged tree may still have dead sections, weakened branches or decay developing around a wound.
Watch for changes over time, including further branch dieback, a thinning crown, cracks that appear to widen or a developing lean. Avoid climbing the tree or cutting into the bark to investigate. A closer inspection may be needed to assess the extent of the injury, and some damage is not visible from ground level.
A tree care professional can advise whether the tree needs pruning, further monitoring or more substantial work. Their assessment should consider both the tree’s condition and its position in relation to people, buildings, paths and roads.
Is a lightning damaged tree dangerous?
It can be. A split trunk, hanging branch or damaged major limb may fail without warning. A tree that has shifted or is leaning more than before may also need urgent attention, particularly if it stands close to a home, road, public footpath or garden seating area.
Keep people and pets away from the affected area. Do not try to remove hanging branches yourself or use a ladder or chainsaw to reach them. If you see a fallen power line near the tree, stay well clear and contact the relevant electricity network operator. Do not touch the line or anything in contact with it.
If there is an immediate risk to people or property, contact the appropriate emergency service. For other concerns, arrange advice from a tree care professional as soon as it is safe to do so.
Should a tree struck by lightning be removed?
Not automatically. A scar or damaged branch does not necessarily mean the whole tree has to come down. The right decision depends on the extent of the injury, the tree’s structural condition and the level of risk around it.
A professional assessment can help establish whether careful pruning or monitoring may be suitable, or whether removal should be considered. It is better to get advice than to make a decision based only on the appearance of the trunk or the amount of foliage remaining.
Avoid cutting away large sections of the tree before it has been assessed. Unnecessary or poorly planned pruning can create further problems and may not address the underlying risk.
What should you do after a lightning strike?
Start by keeping clear of the tree and checking the area for obvious hazards. Do not stand beneath hanging branches or approach a tree that has split, shifted or come into contact with overhead lines.
If there are no immediate dangers, take a photograph from a safe distance and note when the storm occurred. This can help when you speak to a tree professional. Avoid applying products to the damaged area or attempting major pruning yourself. The right care will depend on what the inspection finds.
Hanwell Tree Care can discuss the damage and advise on suitable next steps for trees in Dorset, Poole, Wimborne, Parkstone, Broadstone, Ferndown and Verwood. Get in touch to request a free quote for any recommended tree work.
Frequently Asked Questions
Can a tree survive if lightning strips its bark?
It is possible, but the extent of the injury matters. A narrow scar may be survivable, while extensive bark loss or a deep split can cause serious damage. A tree professional can assess the wound and the tree’s overall condition.
How long does it take to know if a tree will recover?
There is no fixed timeframe. Some serious damage is clear straight away, but other trees develop symptoms over the following months. Continued monitoring and professional advice can help identify whether the tree is recovering or declining.
Should I cut off branches damaged by lightning?
Do not attempt to remove large, broken or hanging branches yourself. They can be unstable and dangerous to reach. Ask a tree care professional to assess the damage and recommend any necessary pruning.
Will every lightning damaged tree need to be removed?
No. Some trees recover, while others may need pruning or removal because of the extent of the damage or the risk they pose. A professional assessment can help determine the appropriate option.
