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Deadheading annuals in most cases will lead to longer bloom time and encourage growth of the plant. Annuals such as cosmos, petunias, geraniums, marigolds, zinnias, and others benefit greatly from ...
Some Buddleja cultivars are either sterile or produce less than 2% viable seed (see "Non-invasive" Buddleja cultivars). [ 28 ] [ 29 ] [ 32 ] [ 33 ] The state of Oregon , which designates B. davidii as a " noxious weed " and initially prohibited entry, transport, purchase, sale or propagation of all of its varieties, amended its quarantine in ...
Buddleja (/ ˈ b ʌ d l i ə /; orth. var. Buddleia; also historically given as Buddlea) is a genus comprising over 140 [3] species of flowering plants endemic to Asia, Africa, and the Americas. The generic name bestowed by Linnaeus posthumously honoured the Reverend Adam Buddle (1662–1715), an English botanist and rector , at the suggestion ...
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Buddleja nivea reaches 1–3 m high, and is chiefly distinguished by the dense white indumentum covering the branchlets, calyxes, and undersides of the leaves. The lanceolate leaves are of variable size, 6–22 cm long by 1.5–11 cm wide; they are acute or acuminate at the apex, rounded at the base, and very coarsely toothed except at the apex.
Buddleja marrubiifolia is a dioecious multi-branched shrub that is 0.5 to 2 m (1.6 to 6.6 ft) high with greyish to blackish rimose bark. The young branches are terete and tomentose, bearing ovate to rhomboid leaves that are 1 to 3 cm (0.39 to 1.18 in) long by 0.6 to 1.5 cm (0.24 to 0.59 in) wide, membranaceous to subcoriaceous, and densely tomentose on both surfaces.
Buddleja indica grows to < 4 m in height in the wild, its branches climbing or trailing. The leaves are opposite, smooth, and dark green, ranging from 2 – 5 cm long by 2 – 5 cm wide, occasionally with petioles < 3 – 10 mm long. The leaf shape, as implied by the synonym, is extremely variable, from orbicular to oak-like. The small clusters ...
Buddleja stenostachya can grow to 3 m in height, its shoots covered by a dense white indumentum. The oblong-lanceolate leaves are of variable size, < 20 cm long by 6 cm wide; they are long pointed, tapered at the base, with only slightly toothed or occasionally entire margins. The upper surfaces are dull green in colour, the undersides, like ...