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Hibiscus syriacus is a hardy deciduous shrub. It is upright and vase-shaped, reaching 2–4 m (7–13 feet) in height, bearing large trumpet-shaped flowers with prominent yellow-tipped white stamens. [12] The flowers are often pink in color, but can also be dark pink (almost purple), light pink or white. Individual flowers are short-lived ...
Rose of Sharon (in Hebrew: חֲבַצֶּלֶת הַשָּׁרוֹן) is a biblical expression, though the identity of the plant referred to is unclear and is disputed among biblical scholars. It has become a common name for several species of flowering plants that are valued in different parts of the world.
Rose wilt – Rose wilt is a complex of viruses and is referred to as "dieback" in some areas. The disease can be spread by vectors such as aphids. Symptoms are variable and range from stunted growth to curled young leaves. The soft tissue symptoms are more evident in spring and new leaves will reflex towards their own petioles.
Sporotrichosis, also known as rose handler's disease, [2] is a fungal infection that may be localised to skin, lungs, bone and joint, or become systemic. [2] [4] It presents with firm painless nodules that later ulcerate. [3] Following initial exposure to Sporothrix schenckii, the disease typically progresses over a period of a week to several ...
Symptoms caused by the rose powdery mildew can be a dwarfing of the growth of the plant, or the twisting and deforming of leaves, [5] but more noticeable is a sign of the disease, which is the white condia, the “powder” that appears on the plant surfaces, such as leaves, shoots, flowers, and buds. [1]
rose yellow vein mosaic virus. Prunus necrotic ringspot virus (PNRSV) is a plant pathogenic virus causing ring spot diseases affecting species of the genus Prunus, as well as other species such as rose (Rosa spp.) and hops (Humulus lupulus). [1] [2] PNRSV is found worldwide due to easy transmission through plant propagation methods and infected ...
Phyllody. Phyllody is the abnormal development of floral parts into leafy structures. It is generally caused by phytoplasma or virus infections, [1] though it may also be because of environmental factors that result in an imbalance in plant hormones. [2] Phyllody causes the affected plant to become partially or entirely sterile, as it is unable ...
Sporothrix schenckii, a fungus that can be found worldwide in the environment, is named for medical student Benjamin Schenck, who in 1896 was the first to isolate it from a human specimen. [1] The species is present in soil as well as in and on living and decomposing plant material such as peat moss. It can infect humans as well as animals and ...