What is the minimum height for a lightning rod installed on a tree?

The minimum height for a lightning rod installed on a tree is specified to be 2 to 3 feet above the highest point of the tree. This height is important because lightning generally seeks the highest point in an area to discharge. By placing the lightning rod above the tree's apex, it ensures that the rod will attract any lightning strikes before they can hit the tree itself, thereby minimizing the risk of damage to the tree and reducing the potential for injury or fire.

Positioning the rod at this height also takes into consideration that trees can be subject to growth, which may alter their height over time. By placing the rod adequately above the tree's crown, it maintains its effectiveness in protection against lightning strikes, ensuring that the risk remains managed over the lifespan of the tree. Proper installation height is critical to ensuring the safety of both the tree and surrounding structures.