Why the Coler Firefly Sanctuary Is a Must-Visit in Northwest Arkansas
On summer nights in Northwest Arkansas, something extraordinary happens. As daylight fades, tiny flickers begin to light up the dark woods.
We often overlook fireflies because we’re so used to them, but they aren’t everywhere! In many parts of the country, these glowing summer nights don’t exist. For many visitors, seeing fireflies like this for the first time feels almost magical.
That’s what makes the Firefly Sanctuary at Coler Mountain Bike Preserve in Bentonville, Arkansas, such a special place. Designated in 2024 as the first firefly sanctuary in Arkansas and the first west of the Mississippi River, Coler Mountain Bike Preserve stands as both a conservation success story and a must-visit summer destination!
What Is Coler’s Firefly Sanctuary?
Coler Mountain Bike Preserve’s Firefly Sanctuary is a protected natural area recognized by Firefly Conservation & Research for its ideal firefly habitat. This designation highlights Coler’s long-standing commitment to conservation.
Unlike many conservation projects, Coler didn’t require restoration or major intervention. Instead, it earned recognition because of what was already being done right.
For a deeper look into how this designation came to life and why it matters, the Visit Bentonville podcast features a dedicated episode exploring the story behind Arkansas’s first firefly sanctuary. The episode highlights the conservation efforts, local partnerships, and the growing importance of preserving firefly habitats in the region.
"Arkansas's First Firefly Sanctuary Lights Bentonville with Natural Wonder"
A New American Town | Visit Bentonville
April 12, 2024
A Natural Fit: Why Fireflies Thrive at Coler
Coler Mountain Bike Preserve provides the exact conditions fireflies need!
No Pesticides or Herbicides
Fireflies are highly sensitive to chemicals. Coler’s pesticide-free approach ensures both larvae and adult fireflies can survive and reproduce safely.
Undisturbed Leaf Litter
Firefly larvae live beneath the soil and within leaf litter. By leaving the forest floor intact, Coler protects critical early life stages.
Dark Skies with Minimal Light Pollution
Artificial light disrupts firefly communication. At Coler, lighting is limited to essential areas like the parking lot and nearby facilities, preserving natural darkness.
Native Plants and Fresh Water Sources
Healthy ecosystems support fireflies. Native vegetation and accessible water create a balanced, thriving habitat.
The Role of Northwest Arkansas Master Naturalists
The creation of the Firefly Sanctuary at Coler Mountain Bike Preserve was driven by the passion and initiative of the Northwest Arkansas Master Naturalists.
This group of trained volunteers studies ecology, wildlife, geology, and conservation as part of an intensive certification program. Beyond education, they lead community projects that make a real environmental impact.
When they realized there were no firefly sanctuaries in Arkansas, they partnered with the Peel Compton Foundation to bring this vision to life.
Their work continues to help raise awareness about the importance of protecting fireflies and their fragile habitats.
Experience the Firefly Walks at Coler
Every summer, visitors can experience the sanctuary through free, guided Firefly Walks led by the Northwest Arkansas Master Naturalists and the Peel Compton Foundation.
- June 12, 2026
- June 13, 2026
- June 18, 2026
- June 19, 2026
- June 20, 2026
These walks provide an immersive, educational experience where visitors learn about:
- Firefly life cycles
- Bioluminescence and communication
- Habitat preservation
This is one of the most unique things to do in Bentonville, Arkansas, during the summer!
When Is the Best Time to See Fireflies in Bentonville?
For the best experience at the Firefly Sanctuary, timing matters:
- Peak Season: Late May through July
- Best Time of Night: Just after sunset (dusk)
- Ideal Conditions: Warm, humid evenings with minimal wind
These conditions create the perfect environment for fireflies to be most active and visible.
Photo by Amy Long at Coler Mountain Bike Preserve
Tips for Visiting the Coler Firefly Sanctuary
To protect the habitat and enhance your experience:
- Arrive early to adjust to the natural light conditions
- Avoid flashlights, phone lights, and camera flashes
- Stay on designated trails to protect larvae habitats
- Wear comfortable clothing and insect protection
- Respect the environment—leave no trace
These small actions play a big role in preserving the sanctuary.
Why the Firefly Sanctuary Matters
Fireflies are more than just beautiful. They’re an indicator of environmental health! Unfortunately, their populations are declining due to:
- Habitat loss
- Light pollution
- Pesticide use
The Firefly Sanctuary at Coler Mountain Bike Preserve serves as a model for conservation, proving that thoughtful land management can create thriving ecosystems without major intervention.
The Ozark Spark: A Rare Firefly Worth Discovering
Beyond the general firefly experience, Northwest Arkansas is also home to something even more unique: a rediscovered species known as the Ozark Spark (Photinus tenuicinctus).
This rare firefly hadn’t been officially documented in decades before being rediscovered in the Ozark region. It’s known for its rapid flashing pattern and distinct movement through the forest understory.
While you might catch glimpses of this species at Coler, there’s much more to its story, from its rediscovery to where and when to best see it.
Full Guide Coming Soon
FAQs About Fireflies at Coler
Where can I see fireflies in Northwest Arkansas?
The Coler Firefly Sanctuary in Bentonville is one of the best places to see fireflies in the region.
When do fireflies come out in Bentonville?
Fireflies are most active from late May through July, just after sunset.
Are the Firefly Walks free?
Yes, guided Firefly Walks at Coler are free and open to the public.
What makes Coler ideal for fireflies?
Its pesticide-free practices, dark skies, preserved leaf litter, and native ecosystem create the perfect habitat.
What is the Ozark Spark firefly?
The Ozark Spark is a rediscovered firefly species native to the Ozarks, known for its rapid flashing pattern and unique behavior.