The answer to 'landscape lighting dead trees' is that dead trees can pose a safety hazard and should be removed, and the landscape lighting may need to be adjusted or relocated accordingly. Dead trees can become unstable and potentially fall, damaging property or injuring people. Additionally, dead trees no longer provide the intended aesthetic and lighting effects that landscape lighting is designed to enhance.
In most cases, it's best to have a professional arborist or landscaper assess the dead trees and determine the appropriate course of action. They can safely remove the trees, evaluate the landscape lighting system, and recommend any necessary adjustments or relocations to ensure the lighting continues to function effectively and safely.