The disease mostly affects weaker plants in the nursery or landscape.
26+ Magnolia Leaf Spot Disease. There are more than 200 kinds of magnolias, but the majority of them are vulnerable to a variety of leaf diseases. Fungal leaf spot disease may be responsible for this condition.
Septoria Host Plants Garden Orchard Plants This Leaf Spot Fungus Infects from www.nature-and-garden.com
Cause of leaf spot on magnolia leaves. The symptoms of this disease on the trees may also vary somewhat. The primary cause of white spots on a magnolia tree is the fungal disease called powdery mildew.
Leaf spot diseases should be taken seriously if they result in moderate to complete leaf loss two to four years in a row.
Spray applications are rarely, if ever, needed to control hop tree, horse chestnut, magnolia, leaf spot diseases caused by species of septoria. These infected areas start to turn yellow and die before long and gives the appearance that your lawn is not being watered enough. Many fungi cause leaf spots on different hosts. Lesioned leaf with fungal fruiting bodies.