– When you discover that 25% of your azalea is infected, consider cutting it back. Each type of gall-producer is specific to a particular kind of plant. Small plants may be stunted because the water and nutrient circulatory system of the plant may be damaged. Camellia Camellia Leaf Gall Disease - Learn About Leaf Gall On Camellias. In general, galls provide a home for the insect, where it can feed, lay eggs, and develop. Some of the native rhododendron species (azaleas) are more susceptible than hybrid rhododendrons. It is caused by the fungus Exobasidium camelliae. In April and May leaves and buds of infected plants develop distorted growth. Usually just a few galls are found, with the rest of the foliage appearing normal. Have you any idea what this could be and, if so, how do I treat it, please? Plant gall damage is usually an aesthetic problem and is not considered serious. Leaf gall (Exobasidium vaccinii) is a very common fungal disease in the early spring on azaleas and occasionally on rhododendrons. Camellia Pruning Camellias: How To Prune A Camellia Plant. You may see the following: Creamy-coloured swellings (galls) develop during summer in the place of leaves. Leaf Gall: (Exobasidium camelliae) This disease is more common on sasanqua varieties of camellia (Camellia sasanqua) than on Camellia japonica. If you keep your camellia indoors, rinse it off in the sink, or wipe the leaves with a damp paper towel. Leaf galls are most often observed during the spring flush of growth. New shoots and leaves become enlarged, thickened and fleshy, and appear abnormal. First, you need to remove infected leaves. Cottony camellia scale (Pulvinaria floccifera) is a soft scale causing mostly aesthetic damage, though it can weaken plants making them susceptible to other insects/diseases.Cottony ovisacs make this scale relatively easy to identify along with copious amounts of honeydew. 1. Shrivelled pieces of leaf sometimes remain at the tips of the galls; The galls can … A. Leaf galls are most often observed during the spring flush of growth. Galls affecting twigs, such as the gouty oak gall and horned oak gall, can be more serious. Galls affecting leaves are seldom if ever a serious problem. Leaf Gall: This disease is more common on sasanqua varieties of camellia (Camellia sasanqua) than on Japanese camellia (C. japonica). Thus, ensure a good drainage to your azaleas. Leaf Gall. However, once I did a little research and adjusted my attitude, I accepted the leaf gall for what it is: a relatively harmless fungus requiring a bit of yearly pruning to bring my sasanqua’s (Camellia sasanqua, Zones 6b–9) appearance back into top form. You can do this by picking them off by hand, or by using scissors. In most cases, galls are unsightly but not damaging to the tree. Symptoms and Diagnosis. It is caused by the fungus Exobasidium camelliae. – The leaf gall needs wet conditions to develop. Camellia Camellia Plant Problems: How To Fix Sooty Mold On Camellia. New shoots and leaves become enlarged, thickened and fleshy, and appear abnormal. 4 Apply horticultural oil to the camellia's leaves to kill spider mites. Galls are abnormal growths that occur on leaves, twigs, roots, or flowers of many plants. How To Treat Azalea Leaf Gall Step by Step.