Ontario Wildflowers website

Petasites japonicus

Butterbur (Petasites japonicus) French names: Pétasite du japon

Family: Composite Family (Asteraceae)

Flowers: Spring;  White;  Indistinguishable parts (petals)

Leaves: Basal Only

Habitat: Fields and Open Areas

Grows in Sun/Shade: Sun

Native/Non-native: Non-native

Photographs: 43 photographs available, of which 5 are featured on this page. SCROLL DOWN FOR PHOTOGRAPHS.

Range Map is at the bottom of the page

Butterbur (Petasites japonicus) plant

A Butterbur plant.

Butterbur (Petasites japonicus) flower spike

Flower spike.

Butterbur (Petasites japonicus) flower

A single flower head.

Butterbur (Petasites japonicus) leaf

Butterbur has giant leaves.

Butterbur (Petasites japonicus) leaves

More Butterbur leaves. Those are Lesser Celandine (Ficaria verna) flowers peeking out.

Range map for Butterbur (Petasites japonicus)

PLEASE NOTE: A coloured Province or State means this species occurs somewhere in that Province/State.
The entire Province/State is coloured, regardless of where in that Province/State it occurs.

(Range map provided courtesy of the USDA website and is displayed here in accordance with their Policies)