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Deadheading is the horticultural practice of removing spent flowers from ornamental plants. Deadheading is a widespread form of pruning , [ 1 ] since fading flowers are not as appealing and direct a lot of energy into seed development if pollinated. [ 2 ]
Buddleja parviflora grows to a height of <10 m in the wild, with a trunk < 20 cm in diameter; the bark blackish and exfoliating. The young branches are subquadrangular and tomentose, bearing opposite subcoriaceous leaves of variable shape, 3 – 12 cm long by 1 – 4.5 cm wide.
B. albiflora panicle. Buddleja albiflora grows to a height of 4 m in the wild, the branches erect and glabrous. The leaves are narrow lanceolate, with a long-tapered point and wedge-shaped base, 10–22 cm long by 1–6 cm wide, toothed and dark-green, glabrous above in maturity, but covered beneath with a fine silvery-grey felt. [3]
Buddleja salviifolia is a large, semi-evergreen shrub, multi-stemmed, with untidy, drooping branches, typically reaching a height of 4 – 8 m. The bark is grey-brown and stringy. The bark is grey-brown and stringy.
Buddleja racemosa is a small, lax, dioecious shrub 0.3 – 1.5 m tall, with greyish-brown rimose bark and persistent old branches. The young branches are terete, tomentose and glandular, bearing small subcoriaceous ovate-oblong to lanceolate leaves 3 – 10 cm long by 1.5 – 4 cm wide, with petioles <2 cm long.
Buddleja tubiflora grows to < 2 m in height, with the typically lax habit creating a spread of < 3 m. The shrub is chiefly distinguished by its striking orange flowers, the corollas 25 mm long by 6 mm wide at the throat, borne in axillary clusters towards the ends of the branches.
Buddleja alternifolia, known as alternate-leaved butterfly-bush, [1] is a species of flowering plant in the figwort family, which is endemic to Gansu, China.A substantial deciduous shrub growing to 4 metres (13 ft) tall and wide, it bears grey-green leaves and graceful pendent racemes of scented lilac flowers in summer.