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Ageratum
''Ageratum'' () (whiteweed in the US) is a genus of 40 to 60 tropical and warm temperate flowering annuals and perennials from the family (biology), family Asteraceae, tribe (biology), tribe Eupatorieae. Most species are native plant, native to Central America and Mexico but four are native to the United States. They form tussocks or small hills. They grow to a height of . The opposite leaves are cordate or oval, hairy or tomentose. The margins are slightly toothed or serrate. The leaves form compact clusters. The fluffy flowers are lavender-blue, pink, lilac, or white, and spread in small compound umbels. They give small, dry fruits. Cultivation Ageratums are grown for their flowers, especially ''Ageratum houstonianum, A. houstonianum''. Most common ageratums, "Hawaii" for example, are a short when full grown. Tall ageratum are also available in seed catalogues. They are about in height with blue flowers. There is also a medium-height snowcapped variety, white top on bl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ageratum Ballotifolium
''Ageratum'' () (whiteweed in the US) is a genus of 40 to 60 tropical and warm temperate flowering annuals and perennials from the family Asteraceae, tribe Eupatorieae. Most species are native to Central America and Mexico but four are native to the United States. They form tussocks or small hills. They grow to a height of . The opposite leaves are cordate or oval, hairy or tomentose. The margins are slightly toothed or serrate. The leaves form compact clusters. The fluffy flowers are lavender-blue, pink, lilac, or white, and spread in small compound umbels. They give small, dry fruits. Cultivation Ageratums are grown for their flowers, especially '' A. houstonianum''. Most common ageratums, "Hawaii" for example, are a short when full grown. Tall ageratum are also available in seed catalogues. They are about in height with blue flowers. There is also a medium-height snowcapped variety, white top on blue flowers. The blues are most popular and common, but colors also inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |