Butterfly Bush: Pollinator Highway
Buddleia davidii
Butterfly bush lives up to its name — fragrant purple, pink, or white panicles attract butterflies in clouds. Choose sterile varieties (Lo & Behold, Flutterby series) to avoid invasive reseeding in ecologically sensitive areas.
Specifications
- Sun
- Full sun
- Water
- Low
- Hardiness zones
- 5–9
- Height
- 3–10 ft
- Bloom time
- Mid-summer to fall
Care & growing tips
Plant in well-drained soil in full sun. Cut back hard to 12 inches in early spring — blooms on new wood. Deadhead spent panicles to extend flowering. Choose sterile cultivars in regions where Buddleia is invasive.
Companion plants
03Find butterfly bush in your zone
05Zone-specific care, planting windows, and alternatives.
Place butterfly bush in your real yard
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Frequently Asked Questions
01 Is butterfly bush invasive?
Seeded varieties are invasive in the Pacific Northwest and parts of the East. Plant sterile cultivars like Lo & Behold, Flutterby, or Miss series — they set no viable seed and are sold in ecologically sensitive states. Check your state extension for local guidance.
02 When should I prune butterfly bush?
Early spring — cut back hard to 12 inches. Butterfly bush blooms on new wood, so hard pruning produces bushier plants with more flowers. Don't prune in fall; leave the stems for winter protection in zones 5–6.
03 Why is my butterfly bush not blooming?
Most likely: too much shade or too little pruning. Needs full sun (6+ hours) and aggressive spring pruning. Also: deadhead spent panicles through summer to keep new flowers coming — unpruned plants stop producing new blooms by August.