Buying rhododendrons – a reliable flowering shrub for the garden
Rhododendrons are well established in gardens across Europe and have long been valued for their combination of ornamental beauty and durability. Choosing to buy a rhododendron means opting for a shrub that offers seasonal interest, structure throughout the year and a relatively modest level of maintenance.
Most rhododendrons are evergreen, providing dense, dark green foliage even in winter. In spring and early summer, they produce large, showy flower trusses that bring colour and visual impact to borders, woodland gardens and park-style planting schemes.
Origin and natural growing conditions
Rhododendrons originate from mountainous regions of the Himalayas and parts of East Asia, where they grow in cool, moist conditions with protection from direct midday sun. This background explains why rhododendrons perform best in sheltered positions, ideally with light shade and protection from strong winds.
They prefer acidic, humus-rich soil that retains moisture without becoming waterlogged. When planted in suitable conditions, rhododendrons are notably hardy and can thrive for many years with minimal intervention.
Types of rhododendrons
With more than 500 recognised rhododendron varieties, there is a wide choice available for different garden sizes and planting purposes.
Evergreen and deciduous varieties
• Evergreen rhododendrons retain their leaves year-round and are commonly used for structure and screening.
• Deciduous types, including many azaleas, lose their leaves in winter but often produce particularly vivid spring flowers.
Growth habit and size
• Compact and dwarf varieties are suitable for smaller gardens, containers and low borders.
• Larger-growing rhododendrons can be used as specimen shrubs or planted in groups to form informal hedging.
At Garden Centre Koeman, the range includes large-leaved and large-flowered rhododendrons, evergreen and deciduous types, and Japanese azaleas that are especially well suited to borders and smaller garden spaces.
When do rhododendrons flower?
The flowering period of rhododendrons typically runs from late March through to early July, depending on the variety. During this time, plants produce clusters of flowers in shades of white, pink, red, purple, yellow and orange. Some varieties are lightly scented, adding an extra sensory dimension to the garden.
By selecting different varieties, it is possible to extend the flowering season and enjoy continuous colour over several months. After flowering, the foliage continues to play an important role, providing texture and structure well into autumn and winter.
Using rhododendrons in garden design
Rhododendrons are particularly effective when used in combination with other plants that share similar growing requirements.
They work well alongside:
• spring-flowering bulbs such as tulips, which provide early colour beneath the shrubs
• azaleas, creating layered planting with varied flower forms and heights
• ferns, which enhance the natural, woodland character of the planting
When thoughtfully combined, these plants create borders that look balanced and well maintained throughout the year.
Pruning and general care
Rhododendrons are generally considered low-maintenance shrubs, but occasional care helps maintain their shape and vigour.
Deadheading spent flowers after blooming prevents unnecessary energy loss and keeps the plant looking tidy. Pruning is rarely required and should only be done when necessary, for example to remove damaged growth or to control size.
For detailed guidance on timing and technique, see our garden blog:
pruning rhododendrons.
