There are about 200 species of annuals, perennials, and evergreen shrubs in this genus, which belongs to the legume family. They are found in North and South America, southern Europe, and northern Africa, usually in dry habitats. The leaves are palmate with lance-shaped leaflets, and the stems are often covered in fine soft down. Many have highly ornamental flowers borne in showy terminal racemes or spikes. The pealike flowers appear mainly throughout summer in many colors, including bicolors. A number of species are grown for horticultural purposes such as nitrogen fixing and stock fodder, and the seeds of some are processed in various ways for human consumption.
CULTIVATION
Lupinus species are best grown in full sun in moderately fertile well-drained soil. Shrubby species can be used in shrubberies or mixed borders, and Lupinus arboreus can be used for naturalizing rough areas. Deadhead spent spikes to ensure strong plants. Propagation is from seed or cuttings. The seedlings should be planted out when small, as these plants dislike root disturbance.
Top Tip
Lupinus arboreus is an aggressive seeder and should be planted where it can be controlled; Lupinus, Russell Hybrids may self-sow, resulting in a variety of colors.
CULTIVATION
Lupinus species are best grown in full sun in moderately fertile well-drained soil. Shrubby species can be used in shrubberies or mixed borders, and Lupinus arboreus can be used for naturalizing rough areas. Deadhead spent spikes to ensure strong plants. Propagation is from seed or cuttings. The seedlings should be planted out when small, as these plants dislike root disturbance.
Top Tip
Lupinus arboreus is an aggressive seeder and should be planted where it can be controlled; Lupinus, Russell Hybrids may self-sow, resulting in a variety of colors.
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