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Commelina cyanea, commonly known as scurvy weed, is a perennial prostrate herb of the family Commelinaceae native to moist forests and woodlands of eastern Australia, [3] Lord Howe Island and Norfolk Island. The blue flowers appear over the warmer months and are pollinated by bees and flies.
It has also been introduced to parts of central and southeastern Europe and much of eastern North America, where it has spread to become a noxious weed. It is common in disturbed sites and in moist soil. The flowers emerge from summer through fall and are distinctive with two relatively large blue petals and one very small white petal.
Centaurea cyanus Scientific classification Kingdom: Plantae Clade: Tracheophytes Clade: Angiosperms Clade: Eudicots Clade: Asterids Order: Asterales Family: Asteraceae Genus: Centaurea Species: C. cyanus Binomial name Centaurea cyanus L. Centaurea cyanus (introduced species) near Peshastin, Chelan County, Washington Centaurea cyanus, commonly known as cornflower or bachelor's button, is an ...
The flowers start pink and turn vivid blue, and are 15–20 mm (0.59–0.79 in) in a branched spike, with all the stamens protruding. The pollen is blue [10] but the filaments of the stamens remain red, contrasting against the blue flowers. It flowers between May and September in the Northern Hemisphere. The Latin specific epithet vulgare means ...
Most common ageratums, "Hawaii" for example, are a short 6–8 inches (15–20 cm) when full grown. Tall ageratum are also available in seed catalogues. They are about 18 inches (46 cm) in height with blue flowers. [4] [failed verification] There is also a medium-height snowcapped variety, white top on blue flowers. The blues are most popular ...
Azure-blue Anagallis arvensis, a blue form. Anagallis arvensis (syn. Lysimachia arvensis), commonly known as the scarlet pimpernel, red pimpernel, red chickweed, poor man's barometer, poor man's weather-glass, [1] shepherd's weather glass or shepherd's clock, is a species of low-growing annual plant with brightly coloured flowers, [2] most often scarlet but also bright blue and sometimes pink.
Ajuga reptans is commonly known as bugle, blue bugle, bugleherb, bugleweed, carpetweed, carpet bugleweed, and common bugle, and traditionally however less commonly as St. Lawrence plant. It is an herbaceous flowering plant in the mint family Lamiaceae, native to Europe.
It has many common names including blue porterweed, blue snake weed, bastard vervain, Brazilian tea, Jamaica vervain, [5] light-blue snakeweed, [6] and, in St. Croix, worryvine. source? It usually is found along country roadsides, and it also grows well as a ruderal plant on disturbed terrain.