Botryosphaeria . species. R. xanthostephanum – bright yellow small flowers – Lovely red peeling bark – probably best as a pot plant – needs to be trained and pruned for shape – somewhat tender. Leaves narrowly oblong, 6 to 9 (sometimes … It is quite devoid of down or hairs in all its parts. Eggs are laid in the spring and hatch from late-June to mid-July. Synonyms: R. aucklandii Hook. yakushimanum – for a description of this most popular species rhododendron. An evergreen shrub, or occasionally a small tree, with erect branches and peeling bark. Peeling bark on a Botryosphaeria-diseased apple branch. Blooming in early to mid spring, it bears abundant, vivid yellow, trumpet-shaped flowers with darker spotting on their dorsal lobes. (Photo by E. A. Bush) Figure 2. A wilting rhododendron branch with the bark partially removed to reveal the brown discoloration in the wood caused by . Delightfully fragrant and with its attractive peeling bark, Rhododendron 'Saffron Queen' is a medium-sized evergreen shrub with flowers held in lax trusses of 8-9. (Photo by E. A. Bush) Rhododendron griffithianum Wight. R. yakushimanum see R. degronianum subsp. The hardiest of the larger-flowered maddenias. Smooth and peeling bark. Rhododendron excellens NVD#018 A Maddenia new to cultivation, closely related to nuttallii but with foliage that is more strongly glaucous-white beneath. Very large and fragrant white flowers with a strong yellow-orange blotch in late spring to early summer. Figure 4. Azalea Bark Scale, Eriococcus azalea: This insect prefers azalea or rhododendron but can infest andromeda, maple, willow, poplar and other plants. Females are approximately 1/8-inch long White felt-like sacs are secreted in May that enclose the body and eggs. f.; R. oblongum Griff. Leaves narrowly oblong, 6 to 9 ( sometimes … Figure 4 are approximately 1/8-inch white... 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