How to grow rhododendrons
Commonly classed as either rhododendrons or azaleas, these popular woodland shrubs put on spectacular flowering displays from spring to early summer. Rhododendrons are usually medium or large evergreen shrubs, while azaleas tend to be smaller and may be evergreen or deciduous. Azalea flowers are usually smaller, but come in a more vivid array of shades, and are sometimes gloriously fragrant. Most rhododendrons and azaleas require acid soils.