Plant Preference/Growing Conditions:

Liatris pycnostachya is best grown in full sun with soil ranging from well-drained moist to occasionally dry. 

Growth Habit/Description:

Can reach a maximum height of 5 feet, but usually ranges 2-4. Has purple disc flowers arranged in heads on a coarse, hairy, leafy stem. Below the stem, there are long purplish bracts, distinguishing it from other species of Liatrus. Native to central and southeastern United States. 

Bloom Season:

Summer

Fall and/or Winter Interest?

Yes.  In the fall, the seed heads become dry and fluffy and available for harvest in the fall.

Host Plant for Caterpillars?

Yes. Most notably, the Glorius Flower Moth (Schinia Gloriosa) caterpillar.

Other Known Ecological Value?

Yes.  Liatris pycnostachya can attract hummingbirds, butterflies, and other pollinators, and the seeds are often eaten by birds. Cattle also graze on them, and benefits towards their grazing range has been observed.

Origin of Name:  The epithet used (pycnostachya) means, roughly translated, crowded. The 'Blazing Star' in its common name refers to its fluffy diskflowers resembling them.

Related Plant Species:   Liatrus pycnostachya is mostly differentiated by its long bracts. It is also one of the tallest Liatrus species cultivated. The liatris plants are typically characterized by their hardiness and purple, thistle-like flowers.

Use For Food/Medicine:

It is theorized that the corm was used by Native Americans medicinally.

North Carolina Extension Gardener Plant Toolbox. North Carolina. Liatris Pycnostachya  [Cited 2025, Sept 5].   Available from: Prairie Blazing Star - Liatris pycnostachya | North Carolina Extension Gardener Plant Toolbox 

USDA NRCS Manhattan Plant Materials Center. Manhattan (KS). 'Eureka' Prairie Blazing Star [Cited 2025, Sept 5].  Available from: USDA, NRCS, Manhattan Plant Materials Center 

Missouri Botanical Garden. Missouri. Liatris pycnostachya [Cited 2025, Sept 7].   Available from:  Liatris pycnostachya - Plant Finder 

Tilley, Nikki.  Liatrus Planting Information: How To Grow Liatrus Blazing Star. Gardening Know how. [Cited 2025, Sept 7].   Available from:   Liatris Care - Information On Growing And Caring For Liatris Plants | Gardening Know How 

Applewood Seed Co. Gayfeather, Thickspike (Liatris pycnostachya). [Cited 2025, Sept 7].   Available from:   Thickspike Gayfeather (Liatris pycnostachya) | Applewood Seed Company