Fireflies are a hallmark of Southern summer, but there are a couple of species here in WNC that shine a bit brighter than the rest. Here's what you need to know about the rare synchronous and blue ghost fireflies that will soon light up the night.

See the light show

Synchronous fireflies, aka Photinus carolinus, are one of few species in North America that coordinate their flashing patterns. Typically from mid-May to early June, they light up as part of their mating ritual, illuminating in a series of five to eight flashes, followed by eight seconds of darkness before the miraculous cycle starts all over again.

The most popular location to view the synchronous fireflies is about two-hours from Asheville at Elkmont Campground in the Great Smoky Mountains National Park. And you'll be lucky to get a spot. Each year, a lottery system is used to assign vehicle passes — the lottery opening will be announced in late April.

Long exposure shots capture the true green glow emitted by the blue ghosts. | Photo by John J. Redden

Feeling the blues

Synchronous fireflies aren't the only notable species here in WNC. The rare blue ghost fireflies are native to the Southern Appalachians, emitting a soft, bluish hue that can last up to a minute at a time.

Several local companies host tours to guide you to the bioluminescent bugs. Asheville Wellness Tours will lead you on a 2.5-hour night hike in the Mills River area on select dates from early to mid-May — or you can opt for an overnight retreat dedicated to firefly forest bathing.

FIND Outdoors also hosts popular blue ghost hikes in the Cradle of Forestry. There are still tickets left for some dates.

What to know before your adventure

As you gear up to see the fireflies, it's important to know the proper etiquette for viewing.

Cover your flashlight with red or blue cellophane.
Only use your flashlight to locate your viewing spot and always keep it pointed at the ground — turn it off once you arrive.
Do not try and catch the fireflies.
Stay on the trail to avoid endangering the fireflies.