Spruce is a tree species with high ornamental value. It grows luxuriantly, has a large crown and a certain shape, and is very suitable for urban residential area greening and rural greening. Spruce leaves are needle-like and evergreen, and the color of needles will change with the change of temperature. The sunshine is insufficient in early spring, and the color is turquoise. When the rainy season comes, the color is bright green. In autumn and winter, the needle-like leaves turn black and green again.