Description of Petasites hybridus (Butterbur)

Petasites hybridus is common butterbur, also called umbrella plant in garden talk. It’s a UK native that loves wet ground and makes very large leaves. It’s useful when you want big coverage in a rough, wildlife-style corner.

Appearance

In early spring it produces pinkish flower spikes before the leaves expand. Then the leaves unfurl into big rounded umbrellas on thick stalks. It can spread quickly by rhizomes and form a wide patch.

Care Guide

It wants moisture and it wants space. If you garden small, containment is essential.

• Sun: Sun to part shade. Part shade often keeps leaves looking fresher.
• Soil: Wet, fertile soil with organic matter.
• Water: Keep consistently wet. It suits stream edges and pond margins.
• Control: Use a root barrier or a large solid container sunk into the ground.
• Cut back: Remove tatty leaves through summer and tidy down later in the year.

If you want to keep a clean edge, slice down around the patch in spring and lift any runners that have escaped.

Suitability for Bog Garden

This suits larger bog gardens and natural ponds where you want quick coverage and habitat. It can hide bare liner edges and give shade at the margin.

In small bog beds, it can dominate, so treat it like a contained specimen rather than a free-ranging plant.

FAQ