Ironweed Organic Seeds (Vernonia spp.) – Tall, hardy wildflower with purple blooms. Supports pollinators and thrives in meadows, prairies, and rain gardens.
Minimum: 15+ Seeds
Ironweed (Vernonia spp.) is a tall, hardy perennial known for its brilliant purple flowers that bloom in late summer to fall. A staple of meadows, prairies, and rain gardens, this low-maintenance native plant attracts butterflies, bees, and other beneficial pollinators while thriving in varied soil conditions. With its strong stems, drought tolerance, and ability to support wildlife, Ironweed is a must-have for native plant enthusiasts and ecological gardeners.
Why Grow Ironweed?
🦋 Pollinator Magnet – Attracts butterflies, bees, and hummingbirds with nectar-rich blooms.
🌾 Tall & Striking Presence – Grows up to 4-7 feet tall, adding height and structure to landscapes.
🌱 Thrives in Tough Conditions – Adaptable to clay, loamy, and moist soils.
☀️ Loves Full Sun to Partial Shade – Flourishes in naturalized and wildflower gardens.
🌿 Supports Native Ecosystems – Provides seeds for birds and habitat for beneficial insects.
Planting & Care Instructions
- Botanical Name: Vernonia spp.
- Common Name: Ironweed
- Plant Type: Perennial
- Height: 4-7 feet
- Spread: 2-4 feet
- Days to Germination: 21-30 days (cold stratification improves germination)
- Light Requirements: Full Sun to Partial Shade
- Soil Preference: Well-draining, clay, loamy, or moist soils
- Watering Needs: Low to moderate – Drought-tolerant once established
- Temperature & Hardiness: USDA Zones 4-9
How to Grow Ironweed from Seed
- Cold Stratification Recommended – Store seeds in a moist paper towel inside a plastic bag in the fridge for 30 days before planting.
- Sow Seeds Outdoors in Fall or Early Spring – Directly plant in prepared soil ¼ inch deep, spaced 18-24 inches apart.
- Keep Soil Moist Until Germination – Water regularly but avoid waterlogging.
- Thin Seedlings if Necessary – Once plants establish, space them out for optimal airflow.
- Mulch for Moisture Retention – Helps retain soil moisture and suppress weeds.
- Minimal Maintenance Needed – Trim back in late winter for fresh spring growth.
Ecological & Garden Benefits
🌾 Perfect for Native Landscapes – Ideal for meadows, prairies, and rain gardens.
🦋 Essential for Pollinator Conservation – Supports bees, butterflies, and moths.
🐦 Provides Seeds for Birds – Goldfinches and other birds feed on dried seed heads.
🌿 Tolerant of Wet & Dry Conditions – Thrives in rain gardens and erosion-prone areas.
Bring Height, Color & Wildlife to Your Garden with Ironweed!
With its vibrant purple blooms, pollinator-friendly nature, and effortless resilience, Ironweed is the perfect native wildflower for sustainable landscapes.