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It’s a fast grower that produces dense, upright panicles of flowers, up to 12 inches long, from late spring to fall. They are typically violet-blue but may be purple, pink, or white. Both ...
It can often be found growing on the sides of roads, particularly on southern exposures, needing full sun and ample moisture during its short growing season. The mature plants often grow and flower in mowed areas. In many parts of its native habitat, road sides are only mowed twice a year. In the late spring and again in late fall.
The leaves are each made up of hairless oval leaflets measuring up to 1.3 centimeters long. The inflorescence is a cone-shaped or cylindrical spike of many purple flowers with pointed green bracts between them. Blooming occurs in summer. [1] [3] The flowers are pollinated by bumblebees. [4] The seeds can persist in a soil seed bank for 8 years. [4]
The total width of a lower leaf may be up to 2 ft (61 cm), and the leaflets are 0.75–4.5 in (1.9–11.4 cm) long and 0.5–2.5 in (1.3–6.4 cm) across. They are generally ovate with serrated margins, and some are cleft into either shallow or deep lobes. The plant has white to greenish flowers in umbrella-like umbels.
It has simple opposite leaves, which are 10 to 40 millimeters long, and only 0.5 to 2 millimeters wide. The flowers are racemose on the branches. They are borne on 1 to 8 millimeter long pedicles. Each flower is bilaterally symmetrical, with five 20 to 38 millimeter long petals fused into a corolla tube, and four stamens.
Dalea purpurea is a species of flowering plant in the legume family known as purple prairie clover. [5] Native to central North America, purple prairie clover is a relatively common member of the Great Plains and prairie ecosystems. It blooms in the summer with dense spikes of bright purple flowers that attract many species of insects.
The plants have tall spikes of purple flowers resembling bottle brushes or feathers that grow 1–5 ft (0.30–1.52 m) tall. The species grows in hardiness zones 3 - 8, [ 4 ] stretching from the Midwest to the East Coast, eastern and western Canada.
Rubus odoratus is widely grown as an ornamental plant for its conspicuous flowers with a long flowering period. This plant likes partial shade, rich, slightly acid soil and moderate water. It is locally naturalized in parts of Washington state [12] and also in Europe, notably south eastern England.