Hydrangea macrophylla 'Leuchtfeuer', 3LThis deciduous shrub bears mop head clusters of flowers in summer, which range in colour from red to rose to purple depending on the pH level of the soil. The foliage will also change, throwing more yellow or red hues in autumn. Whether planted in a border or as a statement in a container, (its sturdy stems make it ideal for planting in a pot), this plant awards real impact to the garden with its sheer profusion of bold colour.