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Black rot, leaf spot and canker Botryosphaeria obtusa Sphaeropsis malorum [anamorph] Black spot (of Japanese pear) Alternaria alternata. Blister canker Helminthosporium papulosum. Blister disease Coniothecium chomatosporum: Blue mold rot Penicillium spp. Penicillium expansum. Botrytis spur and blossom blight Botrytis cinerea
Pyrus calleryana, also known as the Callery pear or Bradford pear, is a species of pear tree native to China and Vietnam, [2] in the family Rosaceae. It is most commonly known for its cultivar 'Bradford' and its offensive odor, widely planted throughout the United States and increasingly regarded as an invasive species .
As the leaves develop, they become increasingly distorted, and ultimately thick and rubbery compared to normal leaves. The color of the leaves changes from the normal green to red and purple, until a whitish bloom covers each leaf. Finally, the dead leaf may dry and turn black before it is cast off. Changes in the bark are less noticeable, if ...
Bradford pear trees are considered malodorous, according to the Spruce, a home and garden site. The foul odor that drifts from the trees’ white or pink flowers is to attract pollinators.
The Callery pear, or Bradford pear, is one of those vampires. Over the years, Callery pear (Pyrus calleryana) has become one of the most widely planted ornamental trees in the US. But over that ...
When numerous, diseased shoots give the tree a blighted appearance. Infection of blossoms and shoots can spread to larger tree limbs. Branches will darken and become water soaked, eventually cracks will develop in bark. Wood under the bark will become streaked with black discoloration. Immature fruit forms water-soaked lesions and later turns ...
A plant pathogen, it causes scab or black spot of pear. It has a widespread distribution in temperate and subtropical regions wherever pears are grown. [1] References
Pyrus betulifolia, known as the birchleaf pear in English and tang li in Chinese, [2] is a deciduous wild pear tree native to the leafy forests of northern and central China and Tibet. It can grow 10 meters high in optimal conditions. Formidable thorns (which are modified stems) protect its leaves from predation.