Description. Fortunately, this disease is more alarming than damaging. Distorted buds. The unsightly, bulging masses can be found on many parts of the plant including the branch tips, leaves, flower parts, and seed pods. As shown by some pictures here, the galls range from small thickenings on leaves to large irregular to round galls up to 2″ in diameter, extending beyond the leaves and flower buds. Bookmark the permalink. The leaves become thickened, curled, fleshy and pale green to white in color. Azalea leaf gall can be prevented in subsequent years by removing the galls by hand as soon as they are detected and destroying them before they turn white and release spores. Azalea Leaf Gall. Azalea leaf gall is a very common and widespread fungus disease that occurs in early spring on new azalea foliage. camellia leaf gall Exobasidium camelliae. In April and May leaves and buds of infected plants develop distorted growth. Caused by a fungus, Exobasidium vaccinii, which is dormant in the developing buds from one year to the next. In home landscape plantings, the disease is more alarming than damaging, but in greenhouse plants grown under very humid conditions, galls may become so abundant that they cause considerable harm if control measures are not implemented. Thick, curled leaves. Some of the native rhododendron species (azaleas) are more susceptible than hybrid rhododendrons. Azalea Gall – This azalea disease commonly occurs in early spring on new leaf growth. Leaves and possibly stems become thickened, curled, fleshy and turn … Also known as Exobasidium vaccinia and appearing similar to something out of a sci-fi film, the tumor-like disease is known to take hold early spring. The leaves become curled, fleshy, and pale green to white. Azalea Gall Exobasidium vaccinii Printable PDF Click on images to see larger view Exobasidium vaccinii is a common fungal disease that produces galls on members of the Ericaceae family and affects a variety of host plants in a number of different ways. Later a whitish fungus covers the gall, and the gall then slowly turns brown, shrinks and becomes quite hard. azalea leaf gall Exobasidium rhododendri. Azalea leaf and flower gall is a disease that causes concern to many home gardeners each year. Azalea Leaf Gall. Source: Selecting and Growing Azaleas Bulletin 670 . It is caused by the fungus Exobasidium vaccinii. The galls enlarge rapidly, and are at first soft and succulent, typically light green in color. Affected leaves eventually turn brown and should be removed and destroyed. Petal Blight – This fungus only affects flowers and appears as pale or whitish spots on colored petals or rust-colored spots on white petals. Pinkster apple gall. About James Morgan James Morgan … azalea leaf gall Exobasidium japonicum. Gall: Usually on azaleas, the leaves become very pale, swollen and distorted, then covered in a bloom of white fungus spores; Leaf spots: Purple or brown, more or less round spots appear on the upper leaf surfaces, usually of evergreen species. Bulbous growths that eventually brown and harden. Posted in Uncategorized. Leaf Gall. When bud … Leaf gall (Exobasidium vaccinii) is a very common fungal disease in the early spring on azaleas and occasionally on rhododendrons. Pale stems. camellia leaf gall Exobasidium camelliae. Signs of Azalea Leaf Gall. Fungicides are generally not needed or recommended for control of this disease. Treating Azalea Leaf Gall.