https://edgeofthewoodsnursery.com/our-plants-for-pollinators/perennial-plant-signs/vernonia-lettermannii-iron-butterfly-2
Vernonia lettermannii 'Iron Butterfly' - Edge Of The Woods Native Plant Nursery, LLC
Vernonia lettermannii 'Iron Butterfly'
vernonia lettermanniiiron butterflyof thenative plantedge
https://www.diggingdog.com/plant/P-2195
Vernonia lettermannii at Digging Dog Nursery
Wandering amidst Arkansas and Oklahoma’s rocky outcrops and flood plains, this graceful easy-care perennial pays homage to George W
vernonia lettermanniidiggingdognursery