Vernonia 'Iron Butterfly' is a compact selection of ironweed, prized for its fine threadlike foliage and vibrant late season flowers. It forms an airy clump topped by rich purple blooms that draw pollinators when few other plants are in peak bloom.
Height & Spread: 36 - 48 in x 24 - 36 in
Bloom Time: Late summer to early fall
Light Requirements: Full sun
Soil Preference: Moist to average, well drained soils
Watering Needs: Moderate; more tolerant of dry conditions once established
Deer Resistance: Typically not preferred by deer
Native Status
This is a cultivated selection of a species native to eastern North America.
WILDLIFE & INSECTS
Butterflies
- Valuable nectar plant for Monarchs and Painted Ladies during migration.
Bees
- Attracts native bees and honeybees during late summer scarcity.
Hummingbirds
- May be visited during migration if planted near other nectar sources.
Spacing & Landscape Use
Spacing Recommendations
- Space 24 - 36 in apart to accommodate airy branching structure.
Landscape Placement
- Ideal for prairie style gardens, pollinator meadows, or back borders where fall color and vertical texture are desired.
Companion Plants
- Solidago rugosa 'Fireworks' (Goldenrod) - Offers a dramatic yellow contrast and blooms simultaneously.
- Aster oblongifolius (Aromatic Aster) - Enhances the late season palette with lavender blue flowers.
- Eupatorium dubium (Joe Pye Weed) - Attracts similar pollinators and shares a love for moist soils.
- Panicum virgatum (Switchgrass) - Provides structural support and golden fall tones.
- Monarda fistulosa (Wild Bergamot) - Adds early summer blooms and fragrant foliage to the mix.