Mainly because the weather is too hot, spruce seedlings take self-protection measures and use dead leaves to reduce water evaporation to improve the survival rate.
Norwegian spruce generally refers to picea abies, and picea abies is a plant and tree of Picea in Pinaceae. Its starting point is as high as 60 meters, DBH 4-6 meters. The bark of young trees is thin, while that of old trees is thick. Big branches spread obliquely, branchlets usually droop, and young branches are reddish brown or orange. Winter buds are conical with longitudinal ridges and pubescence. The upper leaves of branchlets extend forward or upward, and the lower leaves extend to both sides or bend upward with the leaves on both sides. The cone is cylindrical, long10-15cm, as thin as18.5cm, and brown when ripe; Seed scales are thin, rhombic obovate or rhombic ovoid; The seed length is about 4 mm, and the seed wing length is about16 mm. Native to northern and central Europe, it is one of the main afforestation trees in northern Europe. China, Jiangxi, Lushan, Shandong and Qingdao were introduced and grew well. Spruce is a beautiful garden tree, with a green crown, lush foliage, bright green needles and yellow-green new leaves. It is usually cultivated and ornamental. Wood, commonly known as white pine in China market, is a common material for furniture and musical instruments.