Similar to Canada Plum (Prunus nigra), which is primarily a forest species that has blunt teeth on leaves and glands on the upper leaf stalk, where Wild Plum has sharp teeth, and glands on the edge of the leaf blade. It formerly also grew in Ohio but is now thought to be extinct in that state. See: Peach (Prunus persica)-Shothole. Prunus cerasifera “Nigra” . When first noted by late 19th-century growers, they considered black knot to be one of the most destructive prunus diseases around. SCIENTIFIC NAME: Prunus nigra FAMILY: Rosaceae This tree in Colorado Recognized as a Plant Select tree in 2000, Princess Kay Plum is truly a ‘four season tree’ for Colorado landscapes up to 7000’ elevation.Grows well in a variety of soils but prefers good drainage and consistent moisture. Common Names. Prunus cerasifera 'Nigra' (Black cherry plum) will reach a height of 12m and a spread of 12m after 20-50 years. This deciduous shrub or small tree that bears dark red to purple fall foliage with yellowish red fruit. Please see our Tree Planting Guide and Guarantee before purchasing. After studying botany and microbiology at Clemson University, Blackstone was hired as a University of Georgia Master Gardener Coordinator. Prunus cerasifera Nigra - Black Cherry Plum The black cherry plum, Prunus cerasifera ‘Nigra’, also known as ‘Pissardii Nigra’, is a medium-sized, deciduous, ornamental tree with a round, dense, spreading head and dark purplish-black branches and twigs. The purple plum, Prunus cerasifera ‘Nigra’, is an ornamental variety bearing pink spring blossom early in the season, which is followed by bronze-coloured new foliage, gradually darkening to rich purple. syringae has a much wider host range, but both cause similar symptoms on Prunus. Some fungal diseases usually kill the plant, while others may merely weaken it. As they may be infected, destroy rather than compost them. Fractal . It’s a magnificent tree, which also bears incredible autumn colours before leaf fall. The fungus causes the tree's cells to reproduce too rapidly and swell, forming the signature black knot. It may be possible to spray your tree, but you must first determine for sure what kind of infection this is -- the same hole-creating symptoms can be caused by bacteria. Initially, spots pepper foliage and as they enlarge, the centers of spots “melt out,” which leaves holes in the leaves. It is easy to spot the over pruned ones as they then grow badly out of shape, with most of the new growth perched at the top. Texas AgriLife Extension Plant Handbook: Peach, Apricot and Nectarine, Mildred E. Mathias Botanical Garden: Cherries, Peaches and Related Drupes. To manage mildew, use a fungicide that is approved for plum trees. Dark red-purple foliage, turning bronze in Autumn, this is an ideal tree for variation of shape and color in the garden. None, of course, are desirable. Prunus nigra, the Canada plum, Canadian plum, or black plum, is a species of Prunus, native to eastern North America from Nova Scotia west to Minnesota and southeastern Manitoba, and south as far as Connecticut, Illinois, and Iowa. The prunus plant group includes several stone fruit trees or drupes, such as peaches, plums, apricots and cherries. Black knot, Dibotryon morbosum, attacks prunus species; some, such as sour or tart cherries, are less susceptible. Kansas State University reports that purple-leaf plum is particularly prone to develop Cytospora cankers, which are caused by Leucostoma and Valsa fungi. Deep blackish-purple leaves, beautiful pink spring flowers fade to white, red cherry-sized plums in summer, American bred (1916), enjoyed by bees. Prunus cerasifera Nigra Fastigiata- Pink Flowering Plum $ 130.00. Among the most common insect pests are aphids and the small frostbite. The same applies to diseases such as canker - affected branches are within reach and can be quickly treated. Specific diseases. … Diseases – Bacterial leaf spot or shot hole disease may also afflict your plum tree and cause leaf drop, sometimes severely. It is planted most often for its deep reddish-purple leaves and white to pale pink flowers, which are among the first to appear in spring.Although it is short-lived compared to other trees, it grows fast and is great for use as a specimen, street, or shade tree. It bears single, pale-pink flowers in early spring and has purple-black twigs. Prunus is a genus of trees and shrubs, which includes the fruits plums, cherries, peaches, nectarines, apricots, and almonds.. Today, it … Publication Author Bean. Diseases and pests On humus-poor, sandy and somewhat waterlogged soils, rubber-flow can occur occasionally. Prunus ringspot virus is the most prolific, attacking nearly all plum species. Pests May get aphids, caterpillars, leaf-mining moths and bullfinches. Do you know of nurseries that sell red plum (Prunus nigra)? Black knot galls, which grow in response to the Apiosporina morbosa fungal pathogen, are disfiguring growths on trees. St. Helens” are other ornamental plum trees cultivars that maintain purple leaves throughout the growing season. Purple leaf cherry plum Standard Trees . Bacterial leaf spots and shothole disease, caused by Xanthomonas and Pseudomonas bacteria, are similar in appearance. SILVER LEAF OF CHERRY TREE The following are symptoms of a Silver Leaf fungal infection: A silver sheen to the leaves. Prunus cerasifera 'Nigra' is: Deciduous. Although chemical controls are ineffective against cankers, some fungicidal sprays with lime sulfur or Bordeaux mixtures may manage black knot, if infected branches are also removed. ) is an ideal tree for variation of shape and color in the Cercospora.! 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