In most parts of its range it is rarely taller than 1-2 m but in cultivation it readily reaches 2 m or more with a spread of at least 2 m. Despite its natural occurrence in wet places it is a most adaptable plant in the garden and will thrive in a great variety of soils and situations. It is ideal for the damp corner but providing adequate watering is available it will tolerate a much drier site.
Full sun is required for good flowering.
B. robur is a dramatic shrub. Its very large, stiff serrated leaves may reach 40 cm long by 12 cm wide. The yellow mid-vein is also obvious on the upper surface. The open habit of the shrub and the heavy leaf structure give the plant a bold outline which may be incorporated as a feature in a home landscape or as a group planting in an urban park situation. The flower spikes appear usually in autumn and winter but odd flowers may appear in other seasons.