Students branch out and climb trees to learn up close how to care for them and why they help cities flourish

Forestry students at the University of Tennessee, Knoxville, now learn about trees in the classroom and on laptops, but also from 50 feet above the ground. In the process, they gain practical tree-climbing skills, including knot-tying, how to set a climbing line and basic techniques that help them go up, down and across trees.

Cities and trees

I designed the course Principles of Urban Forestry to teach students about the history, benefits and costs of growing and maintaining trees in cities.

Many trees grow near homes, sidewalks, roads, buildings and utility lines in cities. Climbing is one way tree-care professionals can safely reach these trees to prune branches, look for signs of disease and assess possible risks.

During the first 10 weeks of the course, students learn how people, trees and cities changed as communities across the country urbanized. They also begin building basic tree-climbing skills by using 6-foot ropes to learn safety techniques, such as tying climbing knots.

For the last five weeks of the course, students climb trees on the University of Tennessee’s Institute of Agriculture campus in Knoxville. Most students climb to heights of about 50 feet. But some students ascend sawtooth oaks, which can stretch up to 69 feet tall.

These trees have strong branching structures and enough space for students to safely learn different climbing techniques. Students first learn how to move up and down the tree, using a technique called body or hip thrusting. They then practice moving through the tree canopy and learn to limb walk, an advanced practice of traversing thinner branches.

The exercise helps them understand tree structure, movement and care from inside the tree’s canopy.

A focus on trees

Over the past 30 years, the U.S. Forest Service and other organizations have encouraged city dwellers to think differently about trees and greenery, and to promote planting and protecting trees along streets and in parks and other public spaces.

This work has involved planting the right trees in the right places, regularly pruning branches and monitoring tree health.

The care and management of city trees directly affects most Americans. Approximately 80% of the U.S. population lived in urban areas in 2020.

The shade from trees can cool neighborhoods that would otherwise bake in the sun. Trees also improve air quality by absorbing carbon dioxide and pollutants through their leaves and releasing oxygen.

Even though many students in this course may not choose careers in tree care, the course helps them understand why trees are important to communities.

Climbing isn’t just a physical skill

Through tree climbing, students begin to understand the unique challenges of caring for trees in cities in a practical way.

Students learn that they, too, can help communities care for trees safely and responsibly. City residents, politicians, planners, scientists and tree-care professionals ideally need to all work together to decide specifics, such as where trees should be planted and how all neighborhoods can benefit from healthy trees.

Ultimately, this course encourages students to look up, be more observant and better understand the places where they study, work and live. By paying closer attention to trees in their neighborhoods, students begin to see how trees affect shade, safety, comfort, beauty and the overall quality of daily life.

Uncommon Courses is an occasional series from The Conversation U.S. highlighting unconventional approaches to teaching.

This article is republished from The Conversation, a nonprofit, independent news organization bringing you facts and trustworthy analysis to help you make sense of our complex world. It was written by: Sharon Jean-Philippe, University of Tennessee

Read more:

• Art and science illuminate the same subtle proportions in tree branches
• Real or artificial? A forestry scientist explains how to choose the most sustainable Christmas tree, no matter what it’s made of
• Trees ‘remember’ wetter times − never having known abundant rain could buffer today’s young forests against climate change

Sharon Jean-Philippe does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.