General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Partial or Dappled Shade
Partial Shade to Full Shade
Water Preferences: Wet
Wet Mesic
Minimum cold hardiness: Zone 5a -28.9 °C (-20 °F) to -26.1 °C (-15 °F)
Plant Height: 2 to 3 feet 60-90 cm)
Plant Spread: 3 to 5 feet (90-150 cm)
Leaves: Other: Giant Leaves appear after flowering
Flowers: Inconspicuous
Flower Color: White
Bloom Size: Under 1"
Flower Time: Late winter or early spring
Underground structures: Rhizome
Suitable Locations: Bog gardening
Uses: Erosion control
Water gardens
Will Naturalize
Edible Parts: Leaves
Eating Methods: Cooked
Resistances: Humidity tolerant
Toxicity: Other: Contains pyrrolizidine alkaloids (PAs) which have been associated with cumulative damage to the liver and tumor formation. Also contains the carcinogenic PA petasitenine.
Propagation: Other methods: Cuttings: Root
Stolons and runners
Pollinators: Various insects
Miscellaneous: Dioecious

Common names
  • Butterbur
  • Japanese Butterbur
  • Sweet Coltsfoot
  • Fuki
  • Bog Rhubarb
Also sold as:
  • Petasites japonica

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