Ligustrum lucidum is an evergreen shrub or small tree of Ligustrum lucidum in Oleaceae, also known as Ligustrum lucidum and Ilex japonicum. Originated in China, it is widely distributed in the Yangtze River basin and the south, and also cultivated in North China and Northwest China. It can withstand the low temperature of about-10℃ and can safely overwinter in the shelter of the building with good microclimate in the north. It is a native tree species that is widely used in landscaping.
The height of Ligustrum lucidum can reach 8 to 13 meters, and its branches spread obliquely into a wide oval and round crown. Bark grayish brown, leaves opposite leathery, ovate to ovate-lanceolate. The surface is dark green and shiny, and the back is light green and smooth and hairless. Aromatic white florets are clustered into terminal panicles at the top of branches, which are 12 to 20 cm long, and bear oval drupes after flowering, which are about 0.8 cm long. The fruit is purple-blue when it ripens. The flowering period is from June to July, and the fruiting period is 1 1 to1February.
Ligustrum lucidum likes light, but it is slightly shade-tolerant. Like warm and humid climate, suitable for fertile, deep and humid slightly acidic, neutral or slightly alkaline soil. Strong germination, pruning resistance, absorption of sulfur dioxide, hydrogen chloride, hydrogen fluoride and other toxic gases, and dust retention, smoke resistance, sound insulation, so it is most suitable as a greening tree species around pollution sources and dust-producing factories and mining areas.
Ligustrum lucidum can be planted and cut to raise seedlings. Seeding and seedling raising should be planted in winter immediately after harvesting, and the drupe should not be treated. If the seeds are sown in the following spring, the drupe should be soaked in water, peeled off, washed and dried in the shade, and stored in a wet sand layer. If you don't dry it in sand storage and sow it in spring, the germination rate will be low, and it will take a summer to emerge. Therefore, it is better to sow in winter, which can not only germinate early, but also have higher germination rate and emergence rate than spring sowing. Sowing is usually carried out by sowing or drilling, and the soil cover is 1 to 1.5 cm. After sowing, the seedlings will emerge in the next spring, and the plant height can reach 50 cm. As an ornamental street tree, to cultivate Gao Qian plants, it is necessary to plant them closely at the seedling stage, trim and shape them, then change beds and cultivate them into big seedlings, and then leave the nursery after four or five years. As a hedge, you can leave the garden in winter that year. Ligustrum lucidum is rare in pests and diseases except sooty blotch, and easy to manage.
Cutting propagation should be carried out in February and March in spring or rainy season. Cut annual branches with a diameter of 0.3 to 0.4 cm and a length of 12 to 15 cm. Cut the upper node 1 cm flat, cut the lower node oblique, leave one or two leaves on the upper node, and cut in the sand bed, which is 2/3 of the length of the cuttings, keeping the seedbed moist and easy to survive. After transplanting, strengthen the management of fertilizer and water, and the height of seedlings can reach 70 to 9 0 cm in that year.
Ligustrum lucidum can be used as a solitary tree, evergreen all year round, with lush foliage and round crown. In summer, small white flowers in full bloom gather into panicles, which are covered with branches, and the white flowers give off fragrance, which is very eye-catching against the green leaves. In autumn, clusters of blue and purple fruits are covered with branches, which is spectacular. In winter, the green leaves are lush, showing a firm and unyielding charm.
Ligustrum lucidum is a commonly used ornamental tree species in gardens, which can be planted alone or in clusters in the courtyard and also used as a street tree. Because of its strong adaptability, fast growth and pruning resistance, it is also used as a hedge. Generally, it can be formed after 3 to 4 years to achieve the isolation effect. It is easy to sow, propagate and raise seedlings, and can also be used as rootstock to graft and propagate osmanthus fragrans and clove.
At the same time, Ligustrum lucidum has medicinal value. Ripe fruits are harvested and dried in the sun or scalded in hot water. The traditional Chinese medicine is called Ligustrum lucidum, which is cool and sweet, and can nourish liver and kidney, improve eyesight and blacken hair, and treat dizziness, tinnitus, soreness of waist and knees, premature graying of hair and blurred vision. Ligustrum lucidum is also a fine wood material with fine materials.