Plum
Prunus
A plum is a fruit of some species in Prunus. Dried plums are often called prunes, though in the United States they may be labeled as ‘dried plums’, especially during the 21st century.
Plums are a diverse group of species. The commercially important plum trees are medium-sized, usually pruned to 5–6 meters (16–20 ft) height. The tree is of medium hardiness. Without pruning, the trees can reach 12 meters (39 ft) in height and spread across 10 meters (33 ft). They blossom in different months in different parts of the world; for example, in about January in Taiwan and early April in the United Kingdom.
Diseases Affecting Plum
Black Knot
Black knot is a common fungal disease of Prunus trees including ornamental, edible, and native plum and cherry trees. Hard swollen black galls (tumor like growths) form on branches and occasionally on trunks. Many Prunus trees tolerate black knot. Tolerant trees have many galls throughout the tree with few negative effects on the health of…
Insects Affecting Plum
Japanese Beetle
Japanese beetle adults have metallic green bodies with coppery brown wing covers surrounded with 12 white tufts of hair.
Affected Species:
White Prunicola Scale
What was formerly considered to be a single species of scale known as the white peach scale, has been determined to actually involve two species, one commonly known as the white peach scale, Pseudaulacaspis pentagona, and the other, Pseudaulacaspis prunicola, with the suggested common name of white prunicola scale (WPS). The WPS is the species…
Lecanium Scale
The European fruit lecanium is a key soft scale insect pest of shade trees and other woody ornamental plants in…
Affected Species:
Please give us a call if you have any questions about your trees and shrubs or would like to schedule an appointment for us to walk your property.
610.525.1562
