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Flower Bed -- Roosevelt Cottage Campobello Island (NB) September 2017 | by Ron Cogswell
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Flower Bed -- Roosevelt Cottage Campobello Island (NB) September 2017

Per Wikipedia:

 

" 'Ageratum' (whiteweed in the USA), 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 30 in. 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.

 

Ageratums are grown for their flowers, especially A. houstonianum.

 

Most common ageratums, "Hawaii" for example, are a short 6-8 inches when full grown. Tall ageratum are also available in seed catalogues. They are about 18 inches 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 include violet, pink and white.

 

Their size and color makes ageratums good candidates for rock gardens, bedding, and containers. They grow well in sun or partial shade, from early summer to first frost. They are quite easy to grow, producing a profusion of fluffy flowers all season long. "

 

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Taken on September 8, 2017