The Majesty of Giant Sequoias & Their Relevance to Franklin County, PA

This may seem like an odd post for a Mid-Atlantic arborist, but the Antrim Tree Service team recently traveled to Kings Canyon and Sequoia National Parks in California. The relevance of this 3-part series to South-Central Pennsylvania tree stewards will become more apparent.

Standing at the base of a giant sequoia is a humbling experience. These trees are not just tall; they are massive, ancient, and resilient, deeply connected to their forest ecosystems. At Antrim Tree Service, we typically work with oak, maple, cherry, locust and sycamore in Franklin County, Pennsylvania. However, the grandeur of giant sequoias serves as a powerful reminder of the importance of tree stewardship across all species.

The Awe-Inspiring Size of Giant Sequoias

The giant sequoia, scientifically known as Sequoiadendron giganteum, is one of the largest living organisms on Earth. The giant sequoia is part of the cypress family (2). Coast redwoods are in the same plant subfamily. The terms "Redwood" and "Sequoia" are often used interchangeably, but they are distinctly different species. Giant sequoias can reach heights of 250 to 300 feet, and their trunks can exceed 40 feet in diameter. The sheer scale of these trees is difficult to comprehend, and standing among them can evoke a sense of wonder and humility.

This picture doesn't do the General Grant tree justice. It's trunk is over 40 feet wide. It is the 2nd largest giant sequoia by volume, and it is located in Kings Canyon National Park.

Encountering our first giant sequoia put us in a state of awe, disbelief, and joy. These feelings persisted with each "discovery" of mature sequoias throughout our 10-day trip. It's quite difficult to fathom the enormity of these trees, and pictures don't do them justice. The General Sherman Tree, located in California's Sequoia National Park, is the largest tree, by volume, on Earth, boasting a height of 275 feet and an estimated age of 2,200 years (1).

Antrim Tree Service owners take in the imposing size and structure of the General Sherman tree in Sequoia National Park. As of September 2026, the General Sherman is the largest tree, by volume, in the world.

The Ecological Importance of Giant Sequoias

Giant sequoias play a crucial role in their ecosystems. They provide habitat and food for a variety of wildlife, including birds, squirrels, and insects. The dense canopy of these trees creates a unique microclimate that supports a diverse range of understory plants and animals. Additionally, giant sequoias contribute to the overall health of the forest by improving air quality, sequestering carbon, and stabilizing soil.

"The sequoias have a matting, shallow, and wide spreading root system. There is no taproot. They only root to 12 to 14 feet deep even at maturity. A mature sequoia’s roots can occupy over 1 acre of earth and contain over 90,000 cubic feet of soil. That mass of matted roots and soil has to maintain the equilibrium of a tree that is nearly 300 feet tall and weighs nearly 2 million pounds." (3)

Lessons in Resilience

What makes giant sequoias particularly remarkable is their resilience. These trees have evolved to withstand natural disasters such as wildfires, droughts, and pests. Their thick, fibrous bark is resistant to fire, allowing them to survive in environments where other trees might succumb. In fact, these trees have an interdependent relationship with fire. Sequoia cones open and release their seeds as a result of heating from low-intensity fires, supporting reproduction in nutrient dense soil where competing underbrush is eliminated. Low-intensity is the keyword to be recognize. These trees still succumb to high severity fires and in 2020-2022 over 20% of sequoias were killed in the 2020 Castle Fire and 2021 Windy Fire and KNP Complex. (4)

Antrim Tree Service's co-owner, Andrea, stands in front of a fire scarred giant sequoia named Resurrection Tree at Sequoia National Park in September 2026.

Tree Stewardship Inspired by Giants

While we may not have giant sequoias in our Pennsylvania backyards, their existence serves as a powerful reminder of the importance of tree stewardship in our own communities. Trees do more than beautify our surroundings; they cool homes, support wildlife, and improve air quality. By learning from trees like the giant sequoia, we can better care for the trees in our own neighborhoods. Understanding the needs of local tree species and promoting biodiversity can lead to healthier urban forests. Read more about Urban Forestry in our blog posts listed below.

1. Preserving Urban Giants How Franklin County Can Protect Its Big Trees

2. Transforming Urban Forestry in Franklin County How Local Towns Can Benefit from Expert Management

3. Essential Guide to Urban Tree Selection for South Central Pennsylvania Residents

Conclusion: A Call to Action

The majesty of giant sequoias inspires us to take action in protecting and nurturing the trees in our own communities. Whether through planting native species, practicing responsible pruning, or advocating for tree preservation, every effort counts. As we look up at these towering giants, let us remember that the health of our planet depends on the stewardship of all species of trees.

Need help with your trees? Give us a call or book a free, no obligation, estimate online at www.antrimts.com

References

1. https://www.nps.gov/places/000/general-sherman-tree.htm

2. https://www.nps.gov/seki/learn/nature/sequoiasandredwoods.htm

3. https://www.giant-sequoia.com/faqs/giant-sequoia-questions/

4. https://www.fws.gov/project/fire-management-saves-yosemites-giant-sequoias