Trees with yellow flowers include osmanthus fragrans, Sophora japonica, Hypericum chinense, Chimonanthus praecox and Luan tree. The flowering period of osmanthus fragrans is September-65438+1early October, with dense flowers and rich fragrance. Sophora japonica blooms in summer and autumn, with yellow corolla and oblong or nearly oblong flag petals. The flowering period of Hypericum chinense is from June to July, with golden color and slender stamens.

The common cultivated varieties of Osmanthus fragrans are Osmanthus fragrans, Osmanthus cinnabarinus, Hard Ye Gui, Zaoyingui, Hanghuang, Sijigui, Fodingzhu and Osmanthus fragrans.

Chimonanthus praecox likes sunshine, is resistant to shade, cold, drought and waterlogging. Chimonanthus praecox blooms proudly in frosty and snowy days, with yellow flowers like wax and fragrant smell. It is the main ornamental flower in winter. Afraid of wind and cold, it can safely overwinter when the temperature is not lower than-15℃. It can be cultivated in the open field in the south of Beijing, and the flowers will be frozen when the flowering period meets the low temperature of-10℃.

Chimonanthus praecox is drought-resistant and afraid of waterlogging, so it is not suitable for planting in low-lying areas. Trees have strong growth potential, vigorous branches and easy germination of roots. Resistant to pruning and easy to shape. Flowers bloom first and then leaves, and the flowering period is 165438+ 10 to March of the following year, and it matures in July and August.