Idaho is home to over 50 wildflowers found nowhere else on earth

Idaho is home to over 50 wildflowers found nowhere else on earth

Every spring and summer, Idaho’s landscapes transform into seas of color as hundreds of wildflower species bloom across the Gem State.

While many of these species grow throughout the United States, over 50 are endemic – which means they can only be found here in Idaho.

“From alpine slopes and grassy meadows to lava fields and high desert expanses, Idaho’s many landscapes are ideal for a diverse range of wildflowers,” Visit Idaho’s website notes. “Idaho is home to more than 50 varieties of endemic wildflowers.”

Idaho’s endemic wildflowers tell the story of the state’s unique geography and ecosystems — from tiny blooms tucked into alpine rock gardens to vibrant flowers that paint mountain meadows each summer.

Whether you’re on a remote hike or out for a drive, here are a few to keep an eye out for during your next adventure.

Christ’s Indian Paintbrush (Castilleja christii):

Christ’s Indian Paintbrush is a striking perennial wildflower that grows about 6 to 15 inches tall. It typically has several upright stems growing in clusters, with long, narrow green leaves. Unlike Indian Paintbrush, which is red, its bright yellow to yellow-orange flower spikes make it one of Idaho’s most eye-catching endemic wildflowers. It can be found mid-July through August in just one known location near the summit of Mount Harrison in Cassia County. This makes it one of the rarest plants in the state, according to the U.S. Forest Service.

Aase’s Onion (Allium aaseae):

Aase’s Onion is a low-growing wildflower that blooms in early spring with clusters of delicate pink flowers. Found only in the foothills between Boise and Emmett, it is one of Idaho’s endemic plant species. It is most commonly found in several City of Boise foothills reserves, including Camel’s Back, Hulls Gulch, Military Reserve, Hillside to Hollow, and Polecat Reserve.

Sacajawea’s Bitterroot (Lewisia sacajaweana)

Sacajawea’s Bitterroot is a rare wildflower found only in the mountains of central Idaho. It was the first plant species named in honor of Sacajawea. After the snow melts each spring, it briefly blooms with delicate white flowers before disappearing underground until the next year.

Other endemic flowers to watch for include Davis’ Wavewing in the Albion Mountains, Christ’s Buckwheat alongside Christ’s Indian Paintbrush on Mount Harrison, and Packard’s Milkvetch in southwestern Idaho.