Introduction to the Cultivation Techniques and Medicinal Value of Japanese Honeysuckle

Japanese honeysuckle (Lonicera japonica) is a perennial vine of the genus Lonicera in the Caprifoliaceae family, named for its flowers, which open white and later turn yellow. It is highly adaptable, cold- and drought-tolerant, and distributed across many regions both north and south in China. It can grow wild or be cultivated artificially, and is one of the common plants used both as medicine and as food.

There are many types of Japanese honeysuckle varieties in production, including traditional vine-type varieties and selected tree-type Japanese honeysuckle. Tree-type varieties have more upright branches and trunks, making picking and field management easier, and in recent years they have been promoted in many production areas. Different varieties differ in flower bud morphology, yield and resistance, so local climate and soil conditions should be taken into account when choosing rationally for planting.

In cultivation, cutting propagation is mainly used for raising seedlings, though seed propagation can also be used; transplanting in spring and autumn gives a relatively higher survival rate. During the growing period, intertillage and weeding, timely topdressing and pruning should be done well. Moderately pruning old branches and dense branches can improve ventilation and light penetration, and promote the sprouting of new branches and the formation of flower buds. Whether daily management is done properly directly affects the yield and quality of the flowers.

Common field diseases include powdery mildew and brown spot, while aphids and red spider mites are more commonly seen among insect pests. Prevention should be given priority, diseased leaves and residual branches should be cleared away in time, ventilation within the garden should be maintained, and when necessary, targeted pesticides should be selected for control. Harvesting is generally carried out when the flower buds turn from green to white and are about to open; the flower buds picked at this time have better quality after drying in the sun or by artificial drying, and during storage they should be placed in a dry place to prevent moisture and mold.