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.

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Prefers damp conditions.

Flowers in February and March.

Perennial rhizomatous plant.

Occasional but quite widespread in Britain.

Rarely recorded in Leicestershire and Rutland.