Species Vernonia gigantea | Known

Buy Labels

App Pricing

Explore Plants

Log In

Buy Labels

App Pricing

Explore Plants

Sign up

Log in

Is Vernonia gigantea growing in your garden? Record it and all of your plants in Known.

Get Started

Names

Common Names: Tall Ironweed, Giant Ironweed

Growth

Height: 60-96 inches
Spread: 28-32 inches
Growth Rate: Normal growth rate

Appearance

Bloom Color: Purple
Foliage Color: Dark green foliage on the upper surface with whitish undersides.

Environment

Hardiness Zones: Zones 5-8
Sunlight Requirements: Ideally Full Sun, Partial Sun, or Partial Shade.
Soil Type: Well-drained moist to wet soils, including loam, clay-loam, and sandy-loam.
Soil Drainage: Well-drained, moist to wet soils.
Soil pH: 6.0-8.0, tolerant of acidic to basic soils

Lifecycle

Lifecycle: Perennial
Leaf Lifecycle: Deciduous
Seasons of Interest: Spring, Summer, Fall
Bloom Time: Summer to Fall (July through October)

Reproduction

Propagation Methods: Seeds and Division

Wildlife

Attracts Wildlife: Bees attracted, butterflies attracted, other pollinators attracted, birds attracted, hummingbirds not mentioned

References

Taxonomy

Taxonomic Rank: Species
Author: (Walter) Trel.
Publication: Rep. (Annual) Arkansas Geol. Surv. 1888(4): 189 (1891)

Superior Taxa

Kingdom: Plantae
Subkingdom: Pteridobiotina
Phylum: Angiosperms
Order: Asterales
Family: Asteraceae
Subfamily: Vernonioideae
Tribe: Vernonieae
Genus: Vernonia

Synonyms

Chrysocoma gigantea Cacalia gigantea Vernonia maxima var. maxima Chrysocoma praealta Vernonia ovalifolia var. ovalifolia Chrysocoma gigantea Vernonia gigantea var. gigantea Vernonia maxima subsp. maxima Vernonia altissima var. laxa Vernonia maxima Vernonia altissima var. brevipappa Vernonia altissima var. lilacina Vernonia gigantea subsp. ovalifolia Vernonia altissima var. altissima Vernonia gigantea var. praealta Vernonia altissima var. taeniotricha Vernonia oligantha Vernonia praealta Vernonia gigantea var. ovalifolia Vernonia altissima Cacalia gigantea var. gigantea Vernonia ovalifolia Vernonia gigantea subsp. pubescens

References

Taxonomic data from World Flora Online, accessed June 20, 2024