big leaves

Common butter-bur Petasites hybridus with male flowers inflorescence

Giant rhubarb Gunnera tinctoria showing one enormous leaf and a crimson tinged flowering spike

Giant knotweed Fallopia sachalinensis showing numerous drooping flowers, large leaves, stem section and detail of the orange underground rhizome

Water dock Rumex hydrolapathum pencil drawing

Giant hogweed Heracleum sphondylium with stem cross section and lots of leaves