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Spiraea japonica was introduced in North America as an ornamental landscape plant and first cultivated in the northeastern states around 1870. [5] Numerous cultivars have been selected for garden use. The tall forms may be grown as hedges, low screens, or foundation shrubs. The low-growing forms can be used as groundcover or in borders.
Spiraea plants are hardy, deciduous-leaved shrubs. The leaves are simple and usually short stalked, and are arranged in a spiralling, alternate fashion. In most species, the leaves are lanceolate (narrowly oval) and about 2.5 to 10 centimetres (0.98 to 3.94 in) long.
The conifer division of plants includes the tallest organism, and the largest single-stemmed plants by wood volume, wood mass, and main stem circumference.The largest by wood volume and mass is the giant sequoia (Sequoiadendron giganteum), native to Sierra Nevada and California; it grows to an average height of 70–85 m (230–279 ft) and 5–7 m (16–23 ft) in diameter. [1]
Of California's total plant population, 2,153 species, subspecies, and varieties are endemic and native to California alone, according to the 1993 Jepson Manual study. [4] This botanical diversity stems not only from the size of the state, but also its diverse topographies , climates, and soils (e.g. serpentine outcrops ).
Spiraea japonica var. alpina, also known as the alpine spirea or daphne spirea, is a low-growing, rounded, deciduous shrub that has pink flowers in flat-topped clusters in late spring to mid summer. The leaves are small, oval, sharply toothed, and blue green-colored.
coast redwood; California redwood; giant redwood Cupressaceae (cypress family) Sequoiadendron: giant sequoias; Sequoiadendron giganteum: giant sequoia; big tree Cupressaceae (cypress family) Taiwania: Taiwania trees; Taiwania cryptomerioides: Taiwania Cupressaceae (cypress family) Taxodium: bald or swamp cypresses (Taxodium distichum var ...
The giant sequoia is considered the largest known living tree on the planet and also one of the tallest, widest and longest-lived (estimated at 2,000+ years old). It is more than 100 feet around ...
Spiraeoideae as defined before 2007 is paraphyletic, [1] leading some authors to define a broader subfamily which includes the Spiraeoideae as well as the Maleae (plants such as pears and apples whose fruits are pomes), and the Amygdaloideae (including almonds and plums, whose fruits are drupes).