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Vernonia gigantea

Vernonia gigantea

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  • expected in August

Ironweed are tall US natives that look quite similar to each other. All bloom late in the season; purple flowers are much loved by pollinators, especially butterflies.

Giant ironweed or tall ironweed is one of the tallest ironweeds, growing up to 10' high! It is exceptionally tough, succeeding on dry, average, moist, or wet soil in full sun or part shade. However, it is happiest and grows tallest on medium soil.

Zones: 5 to 8

Family: Asteraceae

Type: Perennial

Height: 60 to 96 in.

Spread: 36 to 72 in.

Exposure: Full Sun to Part Shade

Soil Conditions: Medium to Wet

Bloom Time: August to September

Bloom Color: purple-violet

Native Range: from Iowa and Kansas south to Texas and east to New York south to Florida with the exception New Jersey

Image Credits:

  • Cbaile19, CC0, via Wikimedia Commons
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