The cultivation method of Vitex negundo bonsai is as follows: \ x0d \ x0d \ 1. The time to dig stumps in northern China should be after defoliation in early winter and before germination in early spring. After excavation, the stump should be repeatedly observed and carefully studied, and then the best scheme should be determined. Before planting, remove the big roots, keep the small roots and hairy roots, and cut off the redundant branches. When digging, pay attention to the soil lump; When planting, you can't get rid of the bumps, but you can generally survive. Whether the blank is planted in the pot or in the ground depends on the specific situation. If the root system is good, the stump is ideal and the branches meet the requirements, you can plant blanks directly in the basin, otherwise you should plant them in the ground. \x0d\\x0d\2。 Vitex negundo can be used to make various forms of stump bonsai, especially straight-stem, oblique-stem, curved-stem, horizontal-stem and image-like bonsai. Modeling should be tailored to the material and guided according to the situation. At the initial stage of cultivation, Pinza traction was the main method, supplemented by pruning; In the later stage, pruning is the main method, supplemented by rolling. \x0d\\x0d\3。 Vitex negundo is light-loving, drought-resistant, barren soil-resistant, adaptable, pruning-resistant and easy to manage. In the growing season, Vitex negundo bonsai should be placed in a sunny and ventilated place, and the direction of the pot should be rotated every once in a while. Don't fertilize and water too much, avoid steep branches, cut off too long branches in time, and keep the crown shape intact. Always pay attention to the core removal, and break off the extra buds in time. Apply thin organic fertilizer once in spring, summer and autumn. \x0d\\x0d\4。 Put it in an empty house in the sun in winter, or bury it in the open air. The soil layer should be at least 20 cm above the basin edge. The time for changing soil, watering pots, shaping and pruning generally begins after the fifteenth day of the first lunar month and ends before germination. Vitex negundo is not strict with soil, and a small amount of organic mature fertilizer is added when changing soil. In autumn, it is normal that the leaves of potted Vitex negundo turn yellow earlier than other tree species.