This disease is spread by spores and causes a gray or white film to cover the leaves and sometimes branches of the magnolia tree. To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience. Then disinfect your pruning tools by dipping them into a solution of hot water. Reviewed by . Identifying and Treating Leaf Spot Fungus on Magnolia Trees Why Are My Emerald Cedar Leaves Turning Brown? The following are the different types of magnolia tree diseases and their treatment methods. Gabriel Connor Salter. However, when a plant is under immense stress for any other reason, they can be susceptible to honey fungus. This is a hardy tree and a rapid grower and is best used in natural areas. This disease is among the most common magnolia tree diseases. :) × View full size in a new window × View full … Treating Scales On Magnolia Tree . Should I put something on the draining cracks? I want to save this beautiful tree. Magnolia Tree Bark Diseases Garden Guidesmagnolia diseasesLeaf Blight – Sometimes a leaf blight disease, caused by a fungus, covers magnolia leaf undersides with matted fungal threads. If the disease affects the tree over the winter, flowers will become spore sites for the fungus; the blossoms will turn brown or black as they are destroyed by the powdery mildew's … Heavier infestations can be cleaned by pruning the affected … Magnolia acuminata (Cucumber Tree) – This is a very large native tree (50 to 70 feet tall, 40 to 60 feet wide). When a magnolia tree is affected by phytophthora, its roots will start rotting and the health of … The magnolia … Asked August 21, 2016, 12:28 PM EDT. You can use a brush and gloves to lightly brush off the insects with care not to damage the tree bark. White fungus on magnolia tree Asked June 28, 2014, 9:20 PM EDT Our Jane Magnolia branches are covered with fungus resembling white paint and the tree is dripping a liquid which is turning leaves of coral bells, hostas, and other plants below it black. … It has small, inconspicuous flowers, light green leaves (6 to 10 inches long) and unusual cucumber-shaped fruit, which turns from a bright green to red in autumn. Treating a Magnolia Tree With Ants and Sooty Mold Lily Magnolia Plant Profile What Causes Southern Magnolia Leaves to Turn Yellow? The ‘black soot’ magnolia tree fungus can spread on its own to whatever surface it drips down on . It is fungus disease that attacks most of the young magnolia trees. Leaves die early and hang matted together from the twigs for some time. Leaf blight. Most of the magnolia tree diseases can be controlled through early diagnosis of the disease and taking the necessary precautionary measures. The primary cause of white spots on a magnolia tree is the fungal disease called powdery mildew. Also there are some long draining cracks on the south side. I think the cracks are from drought? Due to the bigger size of the insect, female scales can be picked up by hand in the case of a light infestation. Why Magnolia Buds Don't Open Problems With Bradford Pear Trees When a Bump Is More Than a Bump: Star Magnolias How to Prune a Magnolia Tree Causes of … Step 1. on Oct 16, 2019. My magnolia tree trunk and bark has white spots all over it. Honey fungus Magnolia trees/ shrubs are extremely resilient. Prune out and destroy infected branches. Identifying and Treating Magnolia Tree Diseases Written by Anubhav Kapoor on Nov 06, 2009. What should I spray it with? Are the white spots fungus? Magnolia disease. What You'll Need. Usually, they are not vulnerable to this fungal disease. 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