Magnolia trees are a beautiful and popular addition to any yard. While these trees are relatively low-maintenance, there are a few diseases that can affect magnolia trees. This guide will help you identify common magnolia tree diseases so you can keep your magnolia tree healthy and thriving.
Leaf Spot
Leaf spot is one of the most common magnolia tree diseases and is caused by a fungus that attacks the leaves. Symptoms include brown or black spots that appear on the leaves, which can spread and cause the leaves to drop prematurely. Because this issue is mostly aesthetic and generally does not cause serious health problems, we recommend leaving this issue alone. Healthy trees are less susceptible to diseases like leaf spot, so consider applying a Bio-Stimulant twice per year to keep your magnolia tree happy and healthy.
Photo credit: Richard Webb, Bugwood.org
Wood Rot
Wood rot is caused by a fungus that attacks the bark of your magnolia tree. One of the most common symptoms is fruiting bodies (or mushrooms) growing on the trunk of your tree. To prevent the infected branches or areas of the tree, and apply a fungicide to the remaining wood. To prevent wood rot, make sure your trees are being pruned properly and at the right time. Infected wood should be removed to prevent the spread of fungal spores.
Root Rot
Unlike wood rot, which sometimes does not show symptoms other than fruiting bodies, root rot comes with a variety of symptoms including reduced growth and vigor, dieback in the crown, and fungal growths at the base of the tree. Root rot is caused by fungal pathogens that enter the roots of the tree, usually due to the tree being in less-than-ideal conditions. Poor drainage, wounding of exposed roots, wet soil, and poor planting technique can result in root rot. Unfortunately, root rot is generally not curable, so prevention is key.
Photo credit: Carl Dennis, Auburn University, Bugwood.org
In conclusion, magnolia trees are a stunning addition to any yard, and are relatively low maintenance compared to many other popular landscape plantings. However, in the event that your magnolia becomes sick, understanding the symptoms and treatments for common magnolia tree diseases can help you keep your magnolia tree healthy and beautiful for many years to come.
