Belongs to: flowering plants

Bog bean Menyanthes trifoliata

Also known as: water shamrock, moonflower

Best time to see: mid Apr to mid Jun

Key facts

A creeping plant of freshwater bogs and shallow ponds

Large trefoil leaves are held upright above the surface

Upright spikes of pink-and-white flowers appear in spring

© Tony Gunton

© Steve Prewer