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The best evergreen trees include many more options than Christmas trees and needle-shedding pines. Just like annuals and perennials, evergreens come in a variety of shapes, sizes, and colors.
Yucca filamentosa, [1] Adam's needle and thread, [2] is a species of flowering plant in the family Asparagaceae [3] native to the southeastern United States. Growing to 3 metres (10 feet) tall, it is an evergreen shrub valued in horticulture.
[6] [7] The leaves are dark green and needle-like, and occur in bundles of mainly three, sometimes two or four, especially in seedlings. They often are twisted and 20–45 centimetres (7 + 3 ⁄ 4 – 17 + 3 ⁄ 4 inches) in length. A local race of P. palustris in a cove near Rockingham, North Carolina, have needles up to 24 inches (61 ...
Pinus serotina was described in 1803 by Andre Michaux. [12] Pinus is a large genus of evergreen conifer trees. [13] The species name serotina is derived from the persistently serotinous cones that may remain closed for several years before they release their seeds.
The needles are eaten by some lepidopteran caterpillars, for example the Io moth (Automeris io). Abies balsamea is one of the most cold-hardy trees known, surviving at temperatures as low as −45 °C (−49 °F) (USDA Hardiness Zone 2). Specimens even showed no ill effects when immersed in liquid nitrogen at −196 °C (−320.8 °F). [11]
The leaves are needle-like, arranged in spirals and concentrated at the proximal end of the long shoots, and in clusters of 15–35 on the short shoots; they are 5 to 35 mm (0.20 to 1.38 in) long and 1 to 1.5 mm (0.039 to 0.059 in) wide, rhombic in cross-section, and vary from light green to glaucous green with stomatal bands on all four sides.
Pinus sabiniana trees typically grow to 11–14 metres (36–45 ft), but can reach 32 m (105 ft). The pine needles are in fascicles (bundles) of three, distinctively pale gray-green, sparse and drooping, and grow to 20–30 centimetres (8–12 in) in length.
Evergreen . In botany, an evergreen is a plant which has foliage that remains green and functional throughout the year. [1] This contrasts with deciduous plants, which lose their foliage completely during the winter or dry season. Consisting of many different species, the unique feature of evergreen plants lends itself to various environments ...