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The leaves are lanceolate and 3–10 cm (1–4 in) long. [4] The flowers are most commonly an intense blue colour and arranged in flowerheads (capitula) of 1.5–3 cm diameter, with a ring of a few large, spreading ray florets surrounding a central cluster of disc florets. The blue pigment is protocyanin, which in roses is red. [5]
It is an herbaceous annual or perennial twining liana growing to 2–4 m (7–13 ft) tall. The leaves are spirally arranged, 3–7 cm (1–3 in) long with a 1.5–6 cm (1 ⁄ 2 – 2 + 1 ⁄ 2 in) long petiole. The flowers are trumpet-shaped, 4–9 cm (2–4 in) in diameter, most commonly blue with a white to golden yellow centre.
Ageratum (/ ə ˈ dʒ ɛr ə t ə m /) [2] (whiteweed in the US) is a genus of 40 [3] 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. [3] They form tussocks or small hills.
Growing to 50 cm (20 in) tall and broad, it is a mat-forming herbaceous perennial with small ovoid leaves and bright blue flowers in late summer and early autumn. The leaves may turn red or purple before falling.
Gilia capitata is an annual herb [3] that is somewhat variable in appearance, with branching, leafy stems reaching anywhere from 10 to 90 centimeters in maximum height and sometimes having glandular hairs on the fleshy herbage. The leaves are divided into toothed or lobed leaflets.
It has compound hand-shaped leaves and is often grown with several plants with their trunks braided together. Size: 6–8 feet tall Growing conditions: Bright light, will tolerate medium light ...
This is an annual or biennial plant with one erect, mostly unbranched stem growing 20–100 cm (7.9–39.4 in) tall. The alternately arranged leaves vary in shape or size. The basal leaves usually fall away before flowering. Leaves around the middle of the stem are a few centimeters long and are borne on winged petioles. The blades have ...
Numerous cultivars have been selected as garden plants, and for cut flowers and floristry. They are available in shades of white, pink, purple, and blue. The blooming plant is also used in displays and specialist competitions at flower and garden shows, such as the Chelsea Flower Show. [19]