11/02/2025
One thing that’s interesting concerning trees and lightning is that if a tree is struck once, there’s a higher likelihood it will be hit again! (So much for the old, “lightning doesn’t strike the same place twice myth”.
The reason?
Trees can maintain a higher positive charge due to vascular oil content %, root mass, and soil moisture. Height also plays a factor, however the trees overall electrial resistance (Ohms) plays the biggest!
Eventually, a negative downward stepped leader in the clouds intercepts your trees positively charged vertical streamer, and Walla………..ZZAAPP!! (It’s usually 3 to 5 reciprocal zaps in an instant, hence why lightning flickers).
Here is a Dawn redwood, (Metasequoia glyptostroboides) that had a tree lighting protection system installed. It utilizes very similar hardware and methods when compared to the systems installed on tall towers, antennas, and buildings.
These systems greatly reduce the likelihood of a tree intercepting a strike, and if a strike does connect, it provides a path of low resistance for the energy to travel into the ground and away from the structural roots and utilities.
Many of our highly valuable and historic trees in America have these systems installed to prolong their life. They also can reduce the likelihood of lightning side-flashing from the trunk and onto a home or nearby utilities. Electricity is always looking for the path of least resistance, and these systems allow us to provide a path for our lazy energized friend.
Summit’s ISA BCMA Cody Willard has installed and tested many of these systems, and ensures that they exceed the ANSI A300/BMP industry standards. He also consults nationwide on many of these installs annually, and keeps up-to-date with what’s working best in places like Singapore, England, and German.
Summit Tree Solutions.
208-416-3930
[email protected]
-ISA Board Certified Master Arborist (MW-5744B)
-ISA Wildfire Risk Reduction Qualified (PNWWRR0-0019)
-Idaho DOPL # (1571461)
-TCIA Tree Care Specialist