Prevention’s Tree Pruning While it is impossible to prevent all storm related damage to trees, an ISA Certified Arborist® can help identify potential areas of concern, and help prepare your trees for inclement weather. Preventative tree care may include: • Training your trees to improve their form. • Identifying branch, trunk, and root defects that may weaken a tree, and recommending ways to manage them. • Removing dead or defective branches. • Correcting problems caused by improper care practices, such as topping, that have occurred in the past. • Installing a lightning protection system to protect your high value trees.