Vernonia lettermannii ‘Iron Butterfly’
<i>Vernonia lettermannii</i> ‘Iron Butterfly’

We owe a round of applause to Dr. Allen Armitage for his University of Georgia plant trials, which produced this highly touted tasteful selection of Arkansas resident, Vernonia lettermannii. Distinguished by delicate looking thread-like green leaves, the robust, yet compact, attractively branched mounding habit affords small tubular bright purple blooms housed in showy terminal sprays. Possessing both a herculean mettle and ultra-fine texture, ‘Iron Butterfly’ demands free draining niches and extends seasonal interest with warm rusty toned autumn flower color plus triumphs over hot dry conditions as well as sandy, infertile rock-strewn sites.

Blooms August–September

Size: 2' 0" – 3' 0" high x 18" – 2' 0" wide.

Hardy to zone 4.

Please fill out our Registration Form to receive news of updates to the web site, availability of new plants, give us your feedback, and to be on the mailing list to receive future printed catalogs.

  • Catalog Navigation Menu Top
  • Perennials at Digging Dog Nursery
    • Perennials: Acaena to Anthemis
    • Perennials: Anthriscus to Astrantia
    • Perennials: Baptisia to Cynoglossum
    • Perennials
    • Perennials: Fallopia to Gunnera
    • Perennials: Haloragis to Inula
    • Perennials: Kirengeshoma to Morina
    • Perennials: Nepeta to Pulmonaria
    • Perennials: Rheum to Succisella
    • Perennials: Teucrium to Yucca
  • Ornamental Grasses at Digging Dog Nursery
    • Grasses: Acorus to Deschampsia
    • Grasses: Elymus to Uncinia
  • Shrubs at Digging Dog Nursery
    • Shrubs: Arctostaphylos to Halimiocistus
    • Shrubs: Hebe to Weigela
  • Trees & Vines
  • List by Genus
  • Gift Certificates
  • T-Shirts
  • Gift Cards & Etchings
  • Slideshow
  • Gallery
  • Catalog Navigation Menu Bottom

Latest News

Chillin' in Autumn 2018!

Digging Dog Nursery's Chillin' in Autumn sale is here!

Purchase a minimum of $100…MORE

Digging Dog's Late October Newsletter is on it's way to your inbox!

Meadow-style perennials, Chillin’ in Autumn Sale, Lively late season plants!

Pollinator-friendly Meadow-style perennials…MORE



Current Staff's Favorite Plant

Current Staff's Favorite Plant

Helianthus 'Sheila's Sunshine', Persicaria 'Summer Dance', and Selinum wallichianum

Helianthus ‘Sheila’s Sunshine - P-0461

The sunflower was once an emblem of the Sun God of the Incas. Our sunflowers tolerate a wide range of garden soils, attract bees, and make great cut flowers. Blooms early August – October.

Persicaria ‘Summer Dance’ - P-1312

With foliage that’s close to lime-green, and spiky floral tails that approach the scarlet spectrum of rosy pink, this slow spreading perennial is sure to please. Happiest in semishade with ample moisture. Blooms August–November.

Selinum wallichianum - P-1406

This refined Himalayan beauty happens to be one of our favorite perennial umbellifers. With untold elegance, infinitely divided leaves craft a delicate, lacelike transparency. The compact yet airy green canopy is framed by distinctive, purple-infused branching stems that elevate a charming, late season display of white flattened umbels.

Subduing the riotous array of summertime blooms, it seldom needs staking, and appreciates a well draining moist niche. Blooms June–August.

Digging Dog Nursery Right Border