Alyssum (genus)
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Read about Alyssum (genus) in the Standard Cyclopedia of Horticulture
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Alyssum (classical name). Cruciferae. Low plants with many small clustered flowers, grown in the open and often used in rock-gardens. Plants branching, often tufted: fls. white or yellow, sometimes varying to rose; filaments often notched: fr. a small orbicular pod, with 1 or 2 wingless seeds in each of the 2 compartments; valves of pod nerveless, flattened at the margins.—As many as 100 species in middle Eu., Medit. region and the Caucasus. The sweet alyssum is one of the commonest annuals, grown both in the open and forced in benches, beds or pots. It is of the easiest culture, either indoors or out. The compact varieties are most prized for pot culture. Under glass, it requires temperature of a carnation house. It will stand considerable frost in the open, and may be sown early; it blooms all summer, and until killed by winter. Useful for window-gardens and baskets. For winter bloom, sow seeds late in August or in September. When blooms begin to fail, cut back the plant, and it will bloom again. The perennial alyssums require no special treatment. They are usually propagated by dividing the roots; also by cuttings and seeds. Many other species of alyssum are likely to be found in choice rock-garden collections. A. alpestre. Linn. 3 in., grayish: fls. yellow, in simple raceme.—A. atlánticum, Desf.-A. montanum.—-?. Bertholonii, Desv.-A. argenteum.—A. cuneifolium, Tenore-A. montanum.—A dasycarpum, Steph. Annual: fls. yellow.—A. diffùsum, Tenore-A. montanum.—A. mocrocarpum, DC. Shrubby, somewhat spiny, 8 in.: Lvs. oblong, silvery: fls. white.—A. orientale, Ard. 1 ft.: Lvs. lanceolate, toothed, downy: fls. yellow, in corymbs.—A. tortuosum, Rupr. 6 in., at. twisted: lvs. narrow, hoary: fls. yellow, in corymbs.
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Cultivation
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Propagation
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Pests and diseases
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Species
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References
External links
- w:Alyssum (genus). Some of the material on this page may be from Wikipedia, under the Creative Commons license.
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