Black knot is a common fungal disease of Prunus trees including ornamental, edible, and native plum and cherry trees. Single pink flowers make a spectacular display in spring and the purple foliage a … Black knot of plums and cherries is a widespread and serious disease throughout the United States. Cherry plums are a good source of potassium, calcium, phosphate, vitamin C and B complex vitamins which have a great importance to the process of metabolism and nervous system health. Hard, black galls caused by the black rot fungus on plum twigs. Prunus cerasifera 'Nigra' is a deciduous tree cultivar from the Rosaceae family. Common: Black cherry plum Zones: 4-9 Height/Spread: 15-20 feet/15-20 feet Bloom: April Exposure: Full sun Soil: Clay, loam, or sandy; moderately fertile; well drained Water: Medium Problems: Susceptible to aphids, caterpillars, leaf-mining moths, bullfinches, silver leaf, bacterial canker, and blossom wilt Other: Occasionally produces red or yellow plums View abstract. 2013 Nov 25;18(12):14597-612. doi: 10.3390/molecules181214597. It needs to be pruned. P. cerasifera ‘Vesuvius’ (red-leaf cherry plum) has wine-red leaves and bears large, pale pink flowers. Black Cherry Plum Overview. The ... black cherry. One of the best colour-contrast plants for the garden, this large deciduous shrub produces dense, black-purple foliage throughout summer and autumn. Figure 1. Prunus serotina, commonly called black cherry, wild cherry or wild rum cherry, is native to eastern North America, Mexico and Central America.In Missouri, it typically occurs in both lowland and upland woods and along streams throughout the state (Steyermark). It has an upright habit and forms a rounded shape. Hard swollen black galls (tumor like growths) form on branches and occasionally on trunks. Noteworthy Characteristics. This plant can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. – black cherry Subordinate Taxa. Purple leaf cherry plum Standard Trees . The following species and their cultivars can get black knot: American plum (Prunus americana), European plum (Prunus domestica), Japanese plum (Prunus salicina), sweet cherry (Prunus avium) and Mahaleb cherry (Prunus mahaleb), as well as wild and cultivated species of chokecherries (Prunus virginiana). Origin, history, and uses: Prunus serotina grows abundantly in North America. Grown for the foliage and the flowers, this cultivar produces attractive dark purple-red leaves and stems. Nutraceutical value of black cherry Prunus serotina Ehrh. Many Prunus trees tolerate black knot. fruits: antioxidant and antihypertensive properties. Black Cherry Plum This is a beautiful ornamental, flowering plum with very dark purple summer foliage. Family: Rosaceae Botanical Pronunciation: PROO-nus sair-ah-SIH-fer-uh The ideal conditions for Black Cherry growth vary by regional populations, but all varieties are fast-growing pioneers that prefer well-drained soils. Molecules. Prunus cerasifera ‘Nigra’. In spring it has dainty, pale pink blossoms. Black knot is a common disease in Ohio on wild plums and cherries and in home orchards where pruning and spraying are not regularly practiced. 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