Largest Tree in Washington State
Washington State, with its verdant landscapes and lush forests, is home to some of the most ancient and majestic trees in North America. Among these towering giants, a particularly impressive specimen holds the title of the largest tree in Washington State: a remarkable Douglas Fir known as the ‘Quinault Lake Cedar’, although it actually belongs to the fir family, not the cedar. This tree, stands as a testament to the impressive biodiversity and natural wonders that this Pacific Northwest state boasts.

The Quinault Lake Cedar is nestled in the Quinault Rain Forest, part of the Olympic National Park, where the climate fosters growth conditions that are ideal for trees to reach enormous sizes. It’s not only the size that makes this tree astounding but also its age, estimated to be around 1,000 years old. With a diameter exceeding 18 feet and a height reaching up to 191 feet, this tree captures the imagination of all who encounter it.
Why does this tree hold the title and not others? The answer lies in its volume, which is calculated by measuring the height, diameter at breast height, and then using a formula to estimate the amount of wood in the trunk. This method has deemed the Quinault Lake Cedar larger than others, even surpassing notable contenders like the Forks Spruce, another giant within its reach but measures slightly smaller in volume despite its height.
Beyond the fascination with its sheer size, there’s a wealth of historical and cultural significance attached to such trees within the Pacific Northwest. Native American tribes, like the Quinault, place immense spiritual and cultural value on large trees. They serve as landmarks, sacred symbols, and even as natural amulets for protecting the community. Additionally, these trees have supported the forest’s ecological system by providing crucial habitat for wildlife, and their life cycles have played a part in everything from altering water flow to enriching the soil.
The journey to the Quinault Lake Cedar, while not exceedingly arduous, offers visitors a serene walk through a living museum of nature. The old-growth forest that surrounds this tree includes other giants, creating an atmosphere where time seems to stand still. This environment provides a unique opportunity to reflect on nature’s grandeur and our responsibility to conserve it.
Environmental Impact of These Giants
The preservation of large trees like the Quinault Lake Cedar is not just about enjoying natural beauty; it has profound ecological implications. These ancient trees:
- Sequester carbon: By storing large quantities of carbon in their massive biomass, they help mitigate climate change.
- Promote biodiversity: They serve as critical habitats for various species, from birds to microorganisms, providing shelter and nutrients.
- Regulate water cycles: Trees of this size influence hydrological processes, impacting stream flows and helping to prevent soil erosion.
Recognizing the importance of these trees, conservation efforts in Washington State and broader regions emphasize protecting old-growth forests. Organizations like the Olympic Park Associates work tirelessly to promote and ensure the sustainability of such ecosystems.
Visiting Tips

For those wishing to witness this natural monument:
- Prepare for rain: Quinaulet Rain Forest is renowned for its rainforest status – bring appropriate attire.
- Respect the Forest: Follow park rules, and preserve the sanctity of this natural space.
- Contemplate and Educate: Time spent here should inspire a deeper connection with nature and perhaps spark curiosity to learn more about conservation efforts.
The Quinault Lake Cedar, as the largest tree in Washington State, symbolizes nature’s endless capacity for awe and the legacy we have to protect for future generations. It stands tall, not just as a physical entity but as a reminder of the beauty and importance of our natural world.