If you have storm-damaged trees, you may need to hire an arborist. Unskilled work often results in damage or structural weakness the tree will keep throughout its existence. 

Unskilled tree work, such as topping or excessive limbing up, often causes tree problems including excessive regrowth or decay due to over-pruning. These problems require repeated tree work that would not have been necessary. 

This creates additional costs over the now shortened life of the tree. The skill level of the person hired will dictate the safety and longevity of your tree.

What Is Arboriculture and What Do Arborists Do?

Arboriculture is the art and science of tree care. An arborist is a professional tree care worker who understands arboriculture and has experience in its use. 

A person can learn science, but applying it requires long-term instruction from experienced arborists. Becoming an arborist is like an apprenticeship.

Most professional arborists are members of the International Society of Arboriculture (ISA). The ISA works hard to educate its members and ensure that up-to-date science and skills are spread to the profession as quickly as possible. 

Membership in professional arboriculture organizations is a good sign that the people you are hiring know something about what they are selling.