Narrow-leaf Ironweed, Slim-leaf Ironweed

Narrow-leaf Ironweed, Slim-leaf Ironweed

Vernonia lettermannii 'Iron Butterfly'

This upright perennial bears purple flowers in fall.

  • Purple flowers are produced in fall, providing colour through the bloom season.
  • Upright clump, reaching 90 cm at maturity; divide every three to four years to maintain vigour.
  • Best in full sun with average, dry, well-drained soil.
Size
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Plant Characteristics

Sunlight
Full sun
Soil Moisture
Well-drained, Dry, Average
Drought Tolerant
✓
Hardiness Zone
4 – 4
Mature Height (meters)
0.7 – 0.9
Mature Spread (meters)
0.6 – 0.7
Growth Rate
Medium
Flower Colour
Purple
Foliage Colour
Green
Bloom Time
Fall
Habit
Upright
Deer Resistant
✓
Rabbit Resistant
✓
Pollinator Friendly
✓
Attracts Birds
✓
Landscape Uses
Rock garden
Growing & Maintenance Tips
Best grown in an average to dry, well-drained, sandy soil, in full sun. Tolerates short periods of moisture and is drought tolerant, once established. Low maintenance perennial throughout the season.

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