Tree Struck by Lightning? Here Is What DFW Homeowners Should Do Next

Lightning is one of the most destructive forces your trees will ever face. In the Dallas-Fort Worth area, thunderstorm season runs from late spring through early fall, and a single bolt of lightning can carry more than 300 million volts of electricity. When a tree is struck by lightning, the damage may be immediately obvious or it may take weeks to appear. Understanding what happens inside a tree struck by lightning, and knowing how to respond, can mean the difference between saving a valuable landscape tree and losing it entirely.

How Lightning Damages Trees in Dallas-Fort Worth

When lightning strikes a tree, the electrical current travels through the moisture in the bark, sapwood, and heartwood. The sudden, extreme heat causes water inside the tree to boil instantly, creating steam that expands outward with explosive force. This is why many lightning-struck trees show long, vertical scars where bark has been blown off the trunk.

The damage from a tree struck by lightning can take several forms:

• Bark blowout. Strips of bark are torn away along one or more sides of the trunk, exposing the inner wood.
• Internal fractures. The explosive expansion of steam can split the trunk or major branches from the inside, sometimes invisibly.
• Root damage. The electrical current passes through the root system into the ground, potentially killing fine absorbing roots that are critical for water and nutrient uptake.
• Cambium destruction. The thin layer of living tissue just beneath the bark (the cambium) can be killed by the heat, disrupting the tree's ability to transport water and nutrients.

In the DFW clay soils, lightning damage to trees can be particularly severe because saturated clay conducts electricity efficiently into the root zone, maximizing the damage below ground.

Signs of Lightning Damage to Trees: What to Look For

Not all lightning strikes leave dramatic evidence. Some trees show no visible external damage for days or even weeks before symptoms appear. Here are the key signs to watch for after a storm:

Immediate Signs

• A long, vertical wound or scar running down the trunk
• Large sections of bark blown off or hanging loosely
• Split trunk or broken major branches
• Scorch marks on the bark
• A distinct sulfur or burnt smell near the tree

Delayed Signs (Days to Weeks After the Strike)

• Wilting or browning leaves on one side or throughout the canopy
• Leaf drop that is unusual for the season
• Fungal growth appearing on the trunk or at the base
• Bark that begins to separate from the trunk weeks after the storm
• Branch dieback starting at the tips and progressing inward

If you notice any of these delayed signs after a thunderstorm, your tree may have suffered lightning damage that was not visible at first. An assessment by ISA Certified Arborists is the best way to determine the extent of the damage.

What to Do Immediately After a Tree Is Struck by Lightning

If one of your trees has been struck by lightning, there are several steps you should take right away:

1. Stay Away from the Tree

Do not approach a lightning-struck tree immediately. Downed branches and unstable trunk sections can fall without warning. If the tree is near power lines, call your utility provider first and keep everyone at a safe distance.

2. Document the Damage

Once it is safe to approach, take photos from multiple angles. Document any bark loss, splits, broken branches, or burn marks. This record will be valuable for your arborist's assessment and for any insurance claims.

3. Call an ISA Certified Arborist

Lightning damage often extends far beyond what the eye can see. An ISA Certified Arborist can evaluate both the visible damage and the likely internal and root damage. In many cases, trees can be saved with prompt professional care, but only if the full extent of the injury is properly diagnosed.

4. Water the Tree

A tree struck by lightning is under extreme stress. Providing supplemental water (especially during the hot DFW summers) helps the tree maintain its remaining healthy tissue and begin the recovery process. Focus on deep watering in the root zone rather than surface sprinkling.

5. Avoid Pruning Until Professional Assessment

It may be tempting to cut away damaged branches right away, but incorrect pruning can worsen the stress on a damaged tree. Wait for your arborist to recommend a pruning plan that prioritizes the tree's recovery.

Can a Tree Survive a Lightning Strike?

The answer depends on several factors. Trees that suffer only bark damage on one side often make full recoveries over several growing seasons. Trees that sustain deep internal splits, complete girdling (bark loss encircling the entire trunk), or extensive root damage are less likely to survive.

Species also matters. Live oaks and post oaks, two of the most common trees in the DFW area, tend to be more resilient after lightning strikes than softwoods like pines or cedars. The tree's overall health before the strike plays a major role as well. A tree that was already stressed from drought, disease, or poor soil conditions has fewer reserves to draw on during recovery.

Your ISA Certified Arborist will evaluate whether the tree has a reasonable chance of recovery or whether removal is the safer option. In some cases, a "wait and watch" approach is recommended, with a follow-up evaluation in 6 to 12 months.

Lightning Damage Prevention for DFW Trees

While you cannot stop lightning, you can reduce the risk to your most valuable trees. Lightning protection systems, which consist of copper conductors installed along the trunk and into the ground, can safely direct electrical current away from the tree's living tissue. These systems are commonly recommended for:

• Heritage or specimen trees with high ecological or property value
• Trees taller than surrounding structures
• Trees within 10 feet of a home, pool, or outdoor living area

A certified arborist consultation can help you determine whether lightning protection is a worthwhile investment for your property.

The Role of Professional Tree Care After Lightning Damage

Recovering from a lightning strike is a multi-season process. Professional care during that recovery period can significantly improve the tree's chances. This may include:

• Targeted pruning to remove dead or dangerous branches without further stressing the tree
• Deep root fertilization to supply nutrients directly to the root zone, helping the tree rebuild damaged tissue
• Soil conditioning to improve root health, especially in compacted DFW clay soils
• Ongoing monitoring for secondary threats like boring insects and fungal infections that target weakened trees

Trees that survive the initial damage often face a second wave of threats as pests and diseases take advantage of the weakened state. Regular monitoring by an ISA Certified Arborist catches these secondary issues before they become fatal.

Frequently Asked Questions

How do you know if a tree was struck by lightning?

Look for long vertical scars on the trunk, strips of blown-off bark, scorch marks, or a sulfur smell near the tree. In some cases, the only sign is gradual wilting and browning of leaves in the days after a storm. An ISA Certified Arborist can assess whether lightning was the cause of unexplained tree decline.

Can you save a tree that was struck by lightning?

Many trees can survive a lightning strike, especially if the damage is limited to one side of the trunk and the root system remains mostly intact. Prompt watering, professional assessment, and ongoing care improve the odds significantly. Trees with complete girdling or deep internal splits are less likely to recover.

Should I cut down a tree struck by lightning?

Not necessarily. Only an ISA Certified Arborist can determine whether a lightning-damaged tree is structurally safe and has the potential to recover. Removing a saveable tree is an unnecessary expense, but keeping a structurally compromised tree poses a safety risk. Always get a professional assessment before making the decision.

Does homeowner's insurance cover lightning damage to trees?

Many homeowner's insurance policies cover tree removal if a lightning-struck tree falls on a structure, fence, or vehicle. Coverage for removing a standing damaged tree varies by policy. Check with your insurance provider and keep documentation of the damage for your claim.

Protect Your DFW Trees This Storm Season

Lightning strikes are unpredictable, but your response does not have to be. If a tree on your property has been struck by lightning, or if you want to evaluate your landscape's vulnerability before the next storm, contact TreeNewal's team of ISA Certified Arborists for a professional assessment. With the right care, many lightning-damaged trees can be saved and continue to thrive in your North Texas landscape for years to come.