Placeholder

Vernonia arkansana 'Mammuth'

Also Known As

  • Vernonia crinita 'Mammuth'
  • Mammuth Ironweed

Plant type

perennial

size

  • H: 4'-6'
  • W: 3'-4'

planting zones

  • 5a-9b

More Options

Vernonia arkansana 'Mammuth' plant details

Vernonia arkansana 'Mammuth' is a broadleaf deciduous perennial with green foliage. In fall and summer magenta and purple flowers emerge. Attracts bees, beneficial insects and butterflies making it an excellent addition to pollinator gardens. Grows well with sun and even moisture - low water. Drought tolerant once established. Does well in average soil.

CHARACTERISTICS OF Vernonia arkansana 'Mammuth'

Plant type: perennial
Plant family: asteraceae
Foliage: deciduous green
Mature size: 3 FT - 4 FT - wide, 4 FT - 6 FT - tall
Flowers: magenta and purple blooms in fall and summer
Uses: bog garden, border plant, cutting garden, easy-to-grow, fall color, native plant, screen

GROWING CONDITIONS for Vernonia arkansana 'Mammuth'

USDA Zones: 5a - 9b
Sun exposure: sun
Watering frequency: even moisture - low
Resistant to: deer
Soil needs: average

Nursery contributed plant descriptions

Ironweed 'Mammuth' is a fantastic prairie plant with lance-shaped leaves on stems to six feet tall topped with clusters of warm purple flowers that are attractive to butterflies. A stately plant for the back of the border. Blooms in late summer. Found in rocky flood plains, Vernonia crinita is very tolerant of hot dry locations, yet can withstand brief periods of inundation.

Gardening facts about Vernonia arkansana 'Mammuth' plant

How to Grow Vernonia arkansana 'Mammuth'

  • Sun Exposure

    • sun
  • Water Needs

    • even moisture - drought tolerant
  • Soil Needs

    • average

Features

  • Foliage Color

    • green
  • Flower Color

    • purple
    • magenta
  • Wildlife

    • beneficial insects
    • bees
    • butterflies
    • deer resistant
  • Flower Season

    • summer
    • fall
  • Foliage Season

    • deciduous

See other plant types of Vernonia for your garden

aka Late Night With Ironweed

Plant Type

Perennial

Zones

4a-9b

Size

Height: 1'-2'

Width: 2'-3'

  • sun
  • regular - drought tolerant
Photo of Vernonia lettermannii flower by Intrinsic Perennial Gardens
View Plant

More Options

aka Vernonia crinita, Ironweed

Plant Type

Perennial

Zones

5a-8b

Size

Height: 2'-8'

Width: 2'-3'

  • sun
  • even moisture - regular
Photo of Vernonia arkansana flower, form by Dancing Oaks Nursery
View Plant

More Options

aka Ironweed

Plant Type

Perennial

Zones

5a-8b

Size

Height: 4'

Width: 2'

  • sun
  • even moisture - regular
Photo of Vernonia fasciculata flower by Friends School Plant Sale by Crystal C.
View Plant

More Options

aka Ironweed, New York Ironweed

Plant Type

Perennial

Zones

5a-10b

Size

Height: 4'-6'

Width: 4'

  • sun - mostly shade
  • even moisture - drought tolerant
Photo of Vernonia noveboracensis flower by SB_Johnny
View Plant

More Options

aka Vernonia altissima, Vernonia altissima, Vernonia gigantea spp. gigantea, Giant Ironweed, Tall Ironweed, Tall Ironweed

Plant Type

Perennial

Zones

5a-10b

Size

Height: 5'-7'

Width: 2'-4'

  • sun - mostly shade
  • even moisture - regular
Photo of Vernonia gigantea flower by Almost Eden
View Plant

More Options

+11 more Vernonia
Mailing List
Sign Up for updates on new plant arrivals and deals

© 2010—2026 Plant Lust, LLC All Rights Reserved