Giant Butterbur - Petasites japonicus


Petasites japonicus is a substantial plant, producing huge suborbicular leaves to 90cm across, reaching 150cm in height, in summer. Flowers are cream to white, borne on stout erect stems to 30cm.

Identification difficulty
Recording advice

Unless identified by a recognised expert, a photo is required. If the photo doesn't show the key ID features then in the comments box describe the size and identifying characters you have observed.


Prefers damp conditions.

When to see it

Flowers in February and March.

Life History

Perennial rhizomatous plant.

UK Status

Occasional but quite widespread in Britain.

VC55 Status

Rarely recorded in Leicestershire and Rutland.

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map