Spruce is an evergreen coniferous tree that grows primarily in the cold temperate regions of the world, especially in North America and Eurasia. In the wild, spruce can grow to over 60 meters in height, with a dense crown and a tall, straight form, making it an important component of forests and a valuable timber tree. Spruce wood is hard, with beautiful grain, and is used in various fields such as construction, shipbuilding, and furniture making. Spruce leaves are needle-shaped, long, and thin, and are dark green or bluish-green in color. In horticulture, spruce is a popular plant widely used for landscaping and greening environments. Spruce has strong adaptability, and can grow in various environments, including rocky, sandy, and clayey soils. It can also tolerate adverse conditions such as saline-alkaline soil and pollution.