Rhododendron maximum 'Roseum' is sometimes known as 'Mr Blue Stem', a name that has fascinated us until we finally realized that 'Mr' refers to maximum 'Roseum', and 'Blue Stem' refers to the bluish color of the flower stems. Who knew?? The flower clusters appear in June, and a delicate pink, over leathery evergreen foliage. In our experience R. maximum 'Roseum' is a much easier plant to grow than R. maximum, and later bloom season is a welcome addition to the Rhododendron world. Makes an excellent hedge in shade.