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Alternaria does no direct damage to plants but surface cover of leaves will reduce the plants capacity to photosynthesise and may create an unsatisfactory plant appearance. [8] Canker Leptosphaeria coniothyrium and Cryptosporella umbrina – Cankers present as small yellowish or reddish spots on bark slowly increasing in size.
Centifolia roses are also known as Cabbage roses, or as Provence roses. They are derived from Rosa × centifolia, a hybrid that appeared in the 17th century in the Netherlands, [14] related to damask roses. They are named for their "one hundred" petals; they are often called "cabbage" roses due to the globular shape of the flowers.
Rosaceae (/ r oʊ ˈ z eɪ s iː. iː,-s i. aɪ,-s i. eɪ /), [5] [6] the rose family, is a family of flowering plants that includes 4,828 known species in 91 genera. [7] [8] [9] The name is derived from the type genus Rosa. The family includes herbs, shrubs, and trees. Most species are deciduous, but some are evergreen. [10]
Horticulture is the science and art of growing fruits, vegetables, flowers, or ornamental plants. Horticulture is commonly associated with the more professional and technical aspects of plant cultivation on a smaller and more controlled scale than agronomy. There are various divisions of horticulture because plants are grown for a variety of ...
The leaves are pinnate, have 3–5 leaflets, each 2.5–6 cm long and 1–3 cm broad. In the wild species (sometimes listed as Rosa chinensis var. spontanea), the flowers have five pink to red petals. The fruit is a red hip one to two cm in diameter. The strong branches have a smooth purplish-brown bark, and there may be many to no curved ...
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Viburnum opulus is a deciduous shrub growing to 4–5 m (13–16 ft) tall. The leaves are opposite, three-lobed, 5–10 cm (2–4 in) long and broad, with a rounded base and coarsely serrated margins; they are superficially similar to the leaves of some maples, most easily distinguished by their somewhat wrinkled surface with impressed leaf venation.
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