any of several composite plants of the genus Ageratum, especially A. houstonianum, having heart-shaped leaves and small, dense, blue, lavender, or white flower heads, often grown in gardens.
any of various other composite plants, as the mistflower, having blue or white flowers.
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It is easily grown, and makes a fine second-row plant for a border, contrasting well with Browallia or Ageratum.
The Ageratum is a lovely plant for a low bed, with its great masses of soft lavender flowers.
Ageratum, with its delicate lavender-blue flowers, can be made extremely attractive in combination with yellow Coleus.
Ageratum is lovely for edging beds of pink Geraniums, its soft lavender tones being in perfect harmony with their color.
"We've decided on ageratum for the border and larkspur and monkshood for the back," said Ethel Brown.