Alphabetical Plant Listing

Vernonia noveboracensis (New York Ironweed)

New York Ironweed, New York Flat Tops, Vernonia harperi


A splendid and robust garden plant, Vernonia noveboracensis (New York Ironweed) is a tall, clump-forming perennial boasting loosely branched clusters, 3-4 in. across (7-10 cm), of tiny, fluffy, intense purple, finely petaled flowers in late summer and early fall. Each glorious flower head may consist of up to 30-50 flowers. Attractive to butterflies, the blossoms are borne atop stiff, upright stems carrying lance-shaped, deep green leaves. They give way to fluffy, rusty seed clusters that are devoured by hungry birds. As a tall, narrow plant, New York Ironweed is suited for the back of the border or tight spaces and grows well in the native meadow garden.

  • Grows up to 4-6 ft. tall (120-180 cm) and 3-4 ft. wide (90-120 cm).
  • Performs best in full sun in average, medium to wet soils. Tolerates a wide range of soils, including clay, but prefers rich, moist, slightly acidic soils. It will flourish in regular or dry soil too.
  • Excellent choice for beds and border, cottage gardens, bog gardens, rain gardenswildflower gardens, prairies and meadows.
  • No serious pest or disease issues. Deer resistant.
  • Deadhead regularly to prolong flowering and avoid unwanted self-seeding.
  • Propagate by seed, division or softwood cuttings.
  • Native to eastern North America.

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Requirements

Hardiness 5 – 9
Plant Type Perennials
Plant Family Vernonia - Ironweeds
Exposure Full Sun
Season of Interest Summer (Late)
Fall
Height 4' – 6' (120cm – 180cm)
Spread 3' – 4' (90cm – 120cm)
Spacing 36" – 48" (90cm – 120cm)
Water Needs Low, Average, High
Maintenance Low
Soil Type Chalk, Clay, Loam
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Poorly Drained, Well-Drained
Characteristics Showy
Native Plants United States, Midwest, Ohio, Northeast, Connecticut, Delaware, Massachusetts, Maryland, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Southeast, Alabama, Florida, Georgia, Kentucky, North Carolina, South Carolina, Tennessee, Virginia, West Virginia
Tolerance Clay Soil, Deer, Wet Soil
Attracts Birds, Butterflies
Garden Uses Beds and Borders, Bog Gardens, Ponds and Streams, Rain Gardens
Garden Styles Informal and Cottage, Prairie and Meadow

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Doug Mc Grady (Flickr), Shutterstock

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 5 – 9
Plant Type Perennials
Plant Family Vernonia - Ironweeds
Exposure Full Sun
Season of Interest Summer (Late)
Fall
Height 4' – 6' (120cm – 180cm)
Spread 3' – 4' (90cm – 120cm)
Spacing 36" – 48" (90cm – 120cm)
Water Needs Low, Average, High
Maintenance Low
Soil Type Chalk, Clay, Loam
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Poorly Drained, Well-Drained
Characteristics Showy
Native Plants United States, Midwest, Ohio, Northeast, Connecticut, Delaware, Massachusetts, Maryland, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Southeast, Alabama, Florida, Georgia, Kentucky, North Carolina, South Carolina, Tennessee, Virginia, West Virginia
Tolerance Clay Soil, Deer, Wet Soil
Attracts Birds, Butterflies
Garden Uses Beds and Borders, Bog Gardens, Ponds and Streams, Rain Gardens
Garden Styles Informal and Cottage, Prairie and Meadow

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