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Petasites japonicus

Family: asteraceae
Common name(s): butterbur
Hardiness ratings: USDA zone 3~5 - 8~9

General resources

• Wikipedia. Online encyclopedia entry (if defined).
• Google images. Web search for photographs.
• The Plant List. Taxonomical lookup
• Catalogue of Life. Taxonomical lookup

Links for Petasites japonicus

• Asianflora - Plant photos. (5 photos)
• Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 5-9) (16 photos)
• Denver Botanic Gardens - Description, native range, and cultural requirements. (zone 5) (7 photos)
• Garden.org - Community-assembled plant profile (2 photos)
• Missouri Botanical Garden - Plantfinder page for one of the plants growing at the garden, with usually one or more photos, horticultural information, and noteworthy characteristics. (zone 5-9) (14 photos)
• Ontario Rock Garden Society - Plant of the month profile (4 photos)
• Plant Delights Nursery: Petasites japonicus 'Variegatus' - Catalog page with photo, horticultural basics, and descriptive blurb. (zone 3-8) (1 photo)

Petasites japonicus subsp. giganteus

Common name(s): Giant Japanese Butterbur
Hardiness ratings: USDA zone 4 - 9

Links

• Asianflora - Plant photos. (2 photos)
• Garden.org - Community-assembled plant profile (2 varieties in database) (2 photos)
• Heritage Perennials - Profile with description and horticultural details. (zone 4-9) (1 photo)