They vary in length from an inch to nearly a foot. The most obvious signs of the disease are the hard, black, swollen galls, commonly called knots, on branches and twigs. Black, rough galls or ÒknotsÓ form on the branches of the host. Infection usually occurs on succulent growth in the spring by spores spread by air currents from nearby trees with black knot. Plum tree treatments, most common diseases and pests of this fruit tree The plum tree (Prunus domestica) is a fruit tree that is part of the Rosaceae family. Anthracnose Disease of Common Landscape TreesAnthracnose diseases can impact many types of landscape trees. Usually infection originates in the newest growth, causing small twigs to die. While any tree can be grown as and considered a specimen, the ornamental trees in this article are normally less than 25 feet tall. Black knot also infects fruit spurs, and sometimes trunks. What are a few brands that you carry in ornamental trees? Podosphaera leucotricha is the fungus responsible for this common apple tree disease.Even if you've never grown apples, you probably know about this disease because powdery mildew infects popular ornamental plants, including garden phlox (Phlox paniculata).It's unlikely to kill your plant, but it will sap its strength. It can be found throughout various species in most of North America, but important species to keep watch on are sycamore and flowering dogwood. Varieties differ in form--upright, pyramidal, round, and even weeping. Symptoms of rot diseases include slowed growth, discolored leaves that wilt quickly in hot weather, dieback and sudden plant death. Soil pathogens in the genus Phytophthora can cause crown and root rot diseases of almost all fruit and nut trees, as well as most ornamental trees and shrubs. Deciduous. The Newport Flowering Plum looks amazing when planted as a centerpiece in a garden or flower bed, but this tree requires no accompanying plants, bushes or shrubs to make a statement. Trees & Birds: Unique Bird Houses Moderate grower to 20 feet tall, to 15 feet wide. Canker diseases result when a fungal or bacterial pathogen enters bark or sapwood through a wound. Description `Thundercloud' flowering plum is grown for its red foliage which is borne on a fast growing and upright-spreading tree. This beautiful tree is perhaps the most colorful of all flowering plums! It grows 20 to 30 feet tall, and the growth habit may be rounded, upright, weeping, or corkscrew, depending on the cultivar. . Seldom fruits. One of the hardiest Purpleleaf Plums, the Newport Plum (Prunus cerasifera 'Newport') is an important landscape ornamental tree with unique color. The fungus produces spores in the spring and early Click on a table heading to sort the column. Morphology: This deciduous garden tree grows to height and width of 25’. Canker Diseases. It doesn’t matter if they are edible plums or the decorative, landscaping variety, the trees could be fatally affected. Moderate grower to 20 feet tall and wide. Attacks conifers - The disease is a rot of conifers in many temperate parts of the … If you're looking for a naturally dwarf size tree that's easy to take care, looks incredible in every garden, and produces a delicious fruit you can eat right off the tree, then you need a Hollywood Plum tree in your garden. As the knots grow they eventually cut off the flow of water an… Click on the common name to link to more information about the disease. It bears simple, 2”-4” long elliptically shaped leaves which are arranged alternately on the shoots. Black knot is an important disease of ornamental plum and black cherry. Black knot is a common fungal disease of Prunus trees including ornamental, edible, and native plum and cherry trees. Factors such as location and weather will play a part in which issues your tree encounters. Detailed guide for tree health Tree care video library How to plant your trees However, to initiate your one-time free replacement or refund, please contact us toll free at 888-448-7337, or email [email protected] . Anthracnose is caused by a group of fungi that attacks leaves, twigs, flowers and fruits of a great number of tree and shrub diseases. Purple Eastern Redbud Tree. Grafted. Flowering cherry trees burst into bloom in the spring with a mass of white, pale pink or dark pink flowers. See more ideas about plum tree, tree, fruit trees. At first the knots are somewhat greenish and corky, but with age they become black and hard. Can ornamental trees be returned? Imagine having a compact, tidy tree in your yard that maintains a deep, rich purple shade all summer long! Thank you for visiting Plum Tree Pictures, please come back soon for more great tree pictures! 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