Pinus pinus (Pinus sylvestris L.) is a tree of the genus Pinus in the Pinaceae family. Its bark is reddish brown. Branchlets are dark grayish brown. Needle leaves are blue-green and thick and hard. Female globules have short stems and bend downward. The cones are dark yellow brown at maturity and conical ovoid. The seeds are dark brown oblong or ovoid, slightly flat. Flowering period may-June, the cones mature in September-October of the second year.

Abies is an evergreen tree in the genus Abies of the pine family, also known as Canadian fir, North American fir, and Balsan desert fir. Plants can grow up to 8-20 meters in height; The bark of the old tree is thick and dark reddish brown, with scaly lobes. The young trees are relatively smooth, gray, and the young branches are light yellow green with gray short hairs; Winter buds are small, nearly spherical or broadly ovoid, with resin; The leaves on a tree undergo significant changes, with two rows of flat, dark green leaves arranged on either side.

Abies is an evergreen tree in the genus Abies of the pine family, also known as Canadian fir, North American fir, and Balsan desert fir. Plants can grow up to 8-20 meters in height; The bark of the old tree is thick and dark reddish brown, with scaly lobes. The young trees are relatively smooth, gray, and the young branches are light yellow green with gray short hairs; Winter buds are small, nearly spherical or broadly ovoid, with resin; The leaves on a tree undergo significant changes, with two rows of flat, dark green leaves arranged on either side.

European spruce (scientific name: Picea abies (L.) H. Karst.) It is a tree of the spruce genus in the pine family. The plant can reach a height of 60 meters and a breast height diameter of 4-6 meters; Young trees have thin bark, while old trees have thick bark that splits into small thin pieces; Branches often droop, young branches are light reddish brown or orange red, hairless or sparsely hairy, persistent bud scales at the base are significantly rolled back, and winter buds are conical in shape; Leaves are square shaped with four edges, straight or curved, pointed at the tip, oblique in cross-section, and have pink white stomatal lines on all four sides; The cone is cylindrical in shape, with seeds about 4 millimeters long and wings about 16 millimeters long.

Black spruce (Picea Mariana Britton, Sterns&Poggenb.) is a plant of the pine family and the spruce genus. The crown of the tree ranges from conical to pointed. The bark is gray brown in color. Branches are short and drooping, often stratified; The small branches do not droop and are yellow brown in color. Bud gray brown, with a sharp tip. The leaves are hard, light blue-green, with white frost, and all surfaces have pores. The tips are mostly blunt and pointed. Scales fan-shaped, widest near the tip, rigid, with irregular teeth on the edge of the tip. Round fruit spindle shaped, dull, deep purple, mature purple brown.

European spruce (scientific name: Picea abies (L.) H. Karst.) It is a tree of the spruce genus in the pine family. The plant can reach a height of 60 meters and a breast height diameter of 4-6 meters; Young trees have thin bark, while old trees have thick bark that splits into small thin pieces; Branches often droop, young branches are light reddish brown or orange red, hairless or sparsely hairy, persistent bud scales at the base are significantly rolled back, and winter buds are conical in shape; Leaves are square shaped with four edges, straight or curved, pointed at the tip, oblique in cross-section, and have pink white stomatal lines on all four sides; The cone is cylindrical in shape, with seeds about 4 millimeters long and wings about 16 millimeters long.

Tsuga mertensiana, also known as the North American mountain hemlock, is a species of hemlock native to the west coast of North America, found between central southern Alaska and central southern California. Cedar is a large evergreen coniferous tree that can grow up to 20 to 40 meters in height, with special individuals reaching up to 59 meters in height. Their trunk diameter is as high as 2 meters. The bark is about 3 centimeters thick, with square cracks or wrinkles, and a color ranging from purple brown to gray. The crown of young trees is a neat, slender cone shape, with slanting or drooping lead buds, while the crown of old trees becomes cylindrical. At all ages, it is characterized by slightly drooping tips of small branches.

Silver spruce (scientific name: Picea engelmannii Parry ex Engelm.) is a plant of the pine family and the spruce genus. Evergreen trees. Up to 60 meters in height and 200 centimeters in diameter at breast height. The tree crown has a narrow conical shape. The bark is gray to reddish brown. The small branches are thick and robust. The buds are orange brown, and the leaves are 1.6-3 centimeters long. The cone is purple or dark purple, light brown when ripe, and 3-7 centimeters long; The scales are diamond shaped to oval shaped, with the widest part above the middle. Native to the Rocky Mountains from British Columbia to northern Mexico. Growing on various mountainous soils, including calcareous and non calcareous soils.

Blue pink spruce is an evergreen tree of the spruce genus in the pine family. The plant reaches a height of 15 meters; Conical or columnar crown; The leaves are four edged, sharp and thick, with a blue-green color. They are arranged in a spiral shape on the gray twigs and grow upwards, with gray green wax powder; Male bulbous flowers are oval shaped and solitary, large and yellow green in color, clustered at the top of new branches. The flowering period is late April, and the cones mature from September to October. Blue pink spruce is native to the United States and was introduced to China in the late 1990s. It was introduced to Tieling City in 2002. Introduced and cultivated in Beijing, Liaoning and other places in China, and widely planted as ornamental trees in North America and Northern Europe. Cold resistant, drought resistant, air pollution resistant, light loving, slightly shade tolerant.

Xiangzhi fir is an evergreen tree in the pine family, also known as Canadian fir, North American fir, and Balsan desert fir. Plants can grow up to 8-20 meters in height; The bark of the old tree is thick and dark reddish brown, with scaly lobes. The young trees are relatively smooth, gray, and the young branches are light yellow green with gray short hairs; Winter buds are small, nearly spherical or broadly ovoid, with resin; The leaves on a tree undergo significant changes, with two rows of flat, dark green leaves arranged on either side.

Spruce is a perennial green tree that inhabits mountainous areas and river valleys at elevations of 2000 meters (6600 feet) to 3800 meters (12500 feet). The Hardiness Zones are classified as level 6 to 7, requiring sufficient sunlight, a moist environment, good drainage, and neutral to acidic soil. It can grow in poor or strong acidic soil, but cannot adapt to air pollution environments and grows slowly. In natural environments, it often accumulates into vast pure forests, resembling white clouds from afar, hence the name Spruce.

Pinaceae (scientific name: Pinaceae) is a family of pine trees in the order Pinaceae, commonly known as pine or pine trees. Although many species are called "fir" in Chinese, their general characteristic is that their leaves are shaped like needles to prevent large amounts of water from evaporating. And in some places with less hot climates, around 40 to 60 degrees north latitude (such as Europe), this type of plant is also common. There are 11 genera and approximately 220-250 species in the pine family, mainly distributed in the northern hemisphere.

Black pine is an evergreen tree species belonging to the pine family and the pine genus. The bark of young black pine trees is dark gray, while it becomes gray black when old, and the crown is hairless; Needle needles are dark green, shiny, and rough; Male bulbous flowers are light reddish brown, cylindrical in shape, while female bulbous flowers are upright with stems, oval in shape, light purple red or light brownish red; The cone fruit is green before maturity, brown when ripe, conical oval or ovoid in shape; Seeds are inverted oval shaped; The flowering period is from April to May. Black pine is named after its color, hence the name 'Black Pine'. Black pine is native to the coastal areas of Japan and southern Korea, while its origin in China lies in the coastal regions of Northeast and East China, as well as the introduction and cultivation areas of East and Central China.

Red pine is a tree belonging to the pine family and the pine genus. Branches form umbrella shaped tree crowns; Annual branches pale yellow or reddish yellow, slightly covered in white powder and hairless, with fine serrations on the edges; Male bulbous flowers are light reddish yellow, cylindrical in shape, clustered at the lower part of new branches in a short spike shape, while female bulbous flowers are light reddish purple; The cone is dark yellow brown or light brown yellow, oval or oval conical in shape; Seeds are inverted oval or oval shaped; The flowering period is in April; The fruiting period is from late September to October of the second year. It is named after its reddish brown bark.