Willow trees are trees of the willow genus in the willow family. Branches are cylindrical in shape, with a nearly circular pith; No apical buds, lateral buds usually adhere closely to the branch, and bud scales are single; Leaves alternate, sparsely opposite, usually narrow and long, often lanceolate, feather veins, serrated or entire, petiole short, with supporting leaves, often serrated; The inflorescence of the hibiscus is upright or obliquely spread, with the bracts covering the entire edge, and the pistil composed of two carpels; The capsule is split into two petals; The seeds are small and often dark brown in color. The flowering period is from February to March, and the fruiting period is from March to April. The name of willow tree comes from its head wood working method. The result of the head tree homework is to preserve the trunk for continuous use of the branches, and the pronunciation of the word "willow" is the same as that of "liu", hence the name "willow tree".

Salix elaeagnos, also known as bitter willow, olive willow, gray white willow or desert willow, is a flowering plant that grows in Central, Southern and Southwest Asia. It is an upright shrub that can grow up to 3 meters tall and 5 meters wide, with narrow gray green leaves that can grow up to 20 centimeters long. It turns yellow in autumn. In spring, green male inflorescences appear together with leaves, and the male inflorescences have yellow anthers. Like all willow trees, this species is dioecious.

Red flowered multi branch tamarisk, Tamarix gallica, is a plant of the genus Tamarix in the family Tamaricaceae. The tree species introduced from the United States by the Beijing Shuimu Zhongtian Institute of Plant Science in 1998. The willow branches are slender and soft, with a graceful posture and leaves that grow alternately. The raceme inflorescence gathers at the top of the branches in the same year to form a cone-shaped inflorescence, and blooms in summer and autumn, which is quite beautiful.

Chuanqianliu is a small evergreen tree in the family Myrtle, belonging to the genus Melastomataceae. Plant height 2-5 meters; Bark cracking; The tender branches are cylindrical in shape, with slender and drooping branches; The leaves are leathery, ranging from lanceolate to linear lanceolate, with a pointed or short apex and a narrowed base. Both sides are densely covered with black glandular dots; The spike shaped inflorescence is dense, with silk hairs on the inflorescence axis, membranous petals, nearly circular in shape, light green in color, and numerous stamens arranged densely; Capsule bowl shaped or hemispherical Flowering period from April to September; The fruiting period is from May to October. Due to the dense brush bottle like formation at the top of the spike shaped inflorescence, it is also known as the "bottle brush subtree".

Willow trees are trees of the willow genus in the willow family. Branches are cylindrical in shape, with a nearly circular pith; No apical buds, lateral buds usually adhere closely to the branch, and bud scales are single; Leaves alternate, sparsely opposite, usually narrow and long, often lanceolate, feather veins, serrated or entire, petiole short, with supporting leaves, often serrated; The inflorescence of the hibiscus is upright or obliquely spread, with the bracts covering the entire edge, and the pistil composed of two carpels; The capsule is split into two petals; The seeds are small and often dark brown in color. The flowering period is from February to March, and the fruiting period is from March to April. The name of willow tree comes from its head wood working method. The result of the head tree homework is to preserve the trunk for continuous use of the branches, and the pronunciation of the word "willow" is the same as that of "liu", hence the name "willow tree".