Flower Mound, TX Landscaping Rules: Tree Trimming (2026)

Flower Mound's tree preservation ordinance protects trees of certain caliper sizes and species, particularly those native to the Cross Timbers ecological region including post oak, blackjack oak, cedar elm, bur oak, and pecan. Property owners planning significant trimming of protected trees should consult the Environmental Services Division before work begins. Routine pruning -- removing dead wood, small branches for clearance, and storm damage cleanup -- generally does not require a permit when performed in accordance with ANSI A300 standards. However, topping, lion-tailing, or aggressive crown reduction of a protected tree may trigger a violation if the tree is injured or killed as a result. The town encourages hiring ISA-certified arborists for any work on mature trees. Utility line clearance trimming is coordinated between CoServ Electric and the town. During drought conditions common in Denton County, improper pruning can accelerate stress and mortality in already struggling trees. Flower Mound has designated certain stands of Cross Timbers forest as conservation areas where tree alteration is further restricted.