![]() There is one in particular that is responsible for Bleeding Canker on trees. Bleeding Canker: There are many different species of Phytopthora that cause harm to plants.When these conditions exist, the plant is likely already stressed, which is an ideal time for Phytopthora to move in and cause damage. Phytopthora thrives in poor soil conditions that are uninhabitable for beneficial soil microbes, especially where there is too much water saturation. Phytopthora: Phytopthora is derived from a Greek word meaning “plant destroyer.” It is a very harmful pathogen that causes numerous blights, root rots, crown rots, and stem rots on woody plants and trees.This disease is not usually fatal but will cause plant damage if left untreated. There are many different types of Powdery Mildew that affect specific species, such as dogwood and lilac. It looks like a white, powdery substance on the foliage of the plant. It is one of the most common and recognizable diseases of ornamental plants in the Southeast. Powdery Mildew: Powdery Mildew is a category of fungi.Juniper, leyland cypress, arizona cypress, bald cypress, cedar, arborvitae, and cryptomeria are all vulnerable to Passalora Needle Blight. Passalora Needle Blight begins on the foliage located within the interior of the plant eventually spreads throughout the entire canopy. It used to be called Cercospora, Cercosporidium, and Asperisporium. The name of this needle blight has changed several times since its discovery. Passalora Needle Blight: This is a serious disease that affects a wide range of coniferous plants.Arborvitae, italian cypress, and juniper are also susceptible to Seiridium Canker. It often attacks Leyland cypress in the Southeast. This disease is commonly called Cypress Canker. Seiridium Canker affects plants within the cypress family. Seiridium Canker: Seiridium Canker is a very aggressive and damaging fungal disease pathogen that is found throughout the world.This weakens, stresses, and eventually kills the tree. If this fluxing does not occur, the bacteria will grow, create cavities, and kill the cells that create bark growth. The fluxing, or weeping, is the tree protecting itself from the damaging decay bacterium. ![]() It is caused by a bacterium that enters the bark or root system through a wound. Slime Flux: This is a condition that is also known as Wetwood or Bacterial Wetwood.Wet, moist conditions are ideal for rust infections. Rust spores are visible as an orange powder on plant surfaces. Several consecutive years of rust infection will cause plant deformations. Rusts: (Cedar-Quince Rust, Cedar-Apple Rust, Cedar-Hawthorn Rust) Rust is a fungus that attacks many portions of a plant.This can weaken the plant, which usually predisposes the plant to other ailments or attack by insects. Leaf spots impede vital leaf functions and cause premature leaf drop. This fungus creates leaf spots on the leaf that are usually uniform in shape. The various types of leaf spots are host-specific and generally only affect certain plants located within related plant families, genus, or species. Leaf Spots: (Cherry Leaf Spot, Entomosporium Leaf Spot, Septoria Leaf Spot, Guignardia Leaf Spot, Algal Leaf Spot, Black Spot) Leaf spots are fungal diseases that primarily affect the foliage on the plant.The entire plant may die depending on size of the plant, site conditions, and existing health of the plant. Infection will then spread and eventually kill the infected individual branch or stem. As the tip blight spreads, the tips of the plant begin to fade from green to yellow and then eventually become brown. Moist conditions and shady sites make the ideal setting for tip blight to establish itself then spread. Tip Blights: (Kabatina Tip Blight, Phomopsis Tip Blight, Sclerophoma Tip Blight, Diplodia Tip Blight) These fungal diseases affect a wide variety of coniferous evergreens.Oak, sycamore, ash, elm, maple, and dogwood are all susceptible to anthracnose. ![]() Anthracnose causes leaf, fruit, and twig lesions, as well as irregular dead areas on leaf margins and between leaf veins.
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