New York Ironweed Seeds – 100 Native Purple Wildflower Seeds for Fall Blooms

New York Ironweed (Vernonia noveboracensis) is a tall, clump-forming native perennial prized for its vivid purple flowers that bloom in late summer and fall. Its fluffy, fringed flower heads rise above sturdy stems and deep green foliage, creating a striking vertical accent in borders, meadows, and rain gardens. This native wildflower is a valuable addition to pollinator gardens, attracting bees and butterflies while providing late-season color when many other plants have finished blooming.

New York Ironweed is well suited to naturalized plantings, cottage gardens, and native plant landscapes. Its tolerance for moist soils makes it a good choice for rain gardens, stream banks, and low-lying areas, though it also performs well in average garden soil. The plants typically reach 4 to 6 feet tall, adding dramatic height and texture to the back of the border.

Plant Features

• Native perennial wildflower with vibrant purple blooms
• Blooms in late summer through fall, supporting late-season pollinators
• Tall, upright growth habit ideal for back-of-border or meadow plantings
• Tolerates moist to average soil, including rain gardens
• Low-maintenance and deer-resistant once established

Growing Information

• Botanical Name: Vernonia noveboracensis
• Plant Type: Herbaceous perennial
• Sunlight: Full sun to partial shade
• Soil: Moist, well-drained soil; tolerates wet conditions
• Water Requirements: Medium to high; keep soil consistently moist
• Growth Habit: Upright, clump-forming
• USDA Hardiness Zones: 5-9
• Bloom Season: Late summer to fall
• Mature Height: 4-6 feet
• Spacing: 18-24 inches apart

Planting & Care

Sow New York Ironweed seeds indoors 6-8 weeks before the last frost or directly outdoors in fall. Lightly press seeds into the soil surface; do not cover deeply, as light aids germination. Keep the soil consistently moist and maintain a temperature around 65-70°F. Germination can be slow and irregular, often taking 14-30 days. Once seedlings have several sets of true leaves, transplant them outdoors after the danger of frost has passed, spacing them 18-24 inches apart.

New York Ironweed thrives in full sun to partial shade and prefers moist, fertile soil. Water regularly during the first growing season to help establish a deep root system. Once established, it is relatively drought-tolerant but performs best with consistent moisture. Deadhead spent flowers to encourage continued bloom, or leave seed heads for birds. Cut back stems in late winter or early spring before new growth emerges.

What's Included

100 New York Ironweed seeds.