Broadleaf Ironweed

Broadleaf Ironweed (Vernonia glauca)

Broadleaf Ironweed (Vernonia glauca) is a striking native perennial known for its tall, upright habit and clusters of vibrant purple flowers that bloom in late summer to early fall. This pollinator-friendly plant thrives in meadows, prairies, and moist landscapes, adding bold color and structure while attracting butterflies, bees, and other beneficial insects.

Distinctive Features

Vernonia glauca features broad, lance-shaped green leaves that form a sturdy, upright clump. In late summer, bright purple flower clusters appear at the top of the stems, providing a valuable late-season nectar source for pollinators. This variety typically reaches 3 to 5 feet in height and spreads up to 3 feet, making it an excellent choice for mixed borders and naturalized plantings.

Growing Conditions

• Sun Exposure: Full sun.
• Soil: Prefers well-drained, moderately fertile soil; tolerates clay.
• Water: Prefers consistent moisture but can tolerate short dry periods.
• Humidity: Prefers moderate humidity.
• USDA Hardiness Zones: 5-9, making it adaptable to various climates.

Ideal Uses

• Pollinator Gardens: Attracts bees, butterflies, and hummingbirds.
• Meadows and Prairies: Blends well with native grasses and wildflowers.
• Rain Gardens: Thrives in moist soils.
• Mixed Borders: Provides bold late-season color.
• Naturalized Areas: Supports wildlife and ecological diversity.

Low Maintenance Care

Broadleaf Ironweed is a hardy, easy-care perennial that requires little attention once established.

• Watering: Keep soil consistently moist, especially during dry spells.
• Pruning: Cut back spent flower stalks in late fall.
• Fertilizing: Benefits from compost or organic mulch in spring.
• Pest and Disease Resistance: Resistant to most pests and diseases.
• Winter Care: Leave seed heads for winter interest or cut back in early spring.

Why Choose Broadleaf Ironweed?

Broadleaf Ironweed is a native perennial that provides essential late-season nectar and thrives in a variety of landscape settings.

• Brilliant Purple Flowers: Creates a bold, late-summer display.
• Pollinator Magnet: Supports bees, butterflies, and other beneficial insects.
• Thrives in Moist Soil: Ideal for rain gardens and wet meadows.
• Low Maintenance: Requires little care once established.
• Wildlife-Friendly: Provides ecological benefits in native plantings.

For a striking, wildlife-friendly perennial that thrives in diverse landscapes, Broadleaf Ironweed (Vernonia glauca) is an excellent choice.