Cloves should be transplanted before the buds germinate in early spring. In the transplanting hole, first apply enough base fertilizer, cover a layer of soil on the base fertilizer, and then fill the seedlings with soil. After planting, water it once, and then water it 2-3 times to survive. Clove has strong adaptability and extensive management. As long as we pay attention to weeding, flood prevention in rainy season and watering in drought, we can grow smoothly. Lilacs don't like big fat, so don't apply too much fertilizer, lest the branches grow white and affect flowering. Generally, before winter, decomposed compost can be applied once a year or once every other year.
Before germination in mid-March, clove was pruned, dense branches, weak branches and pest branches were desulfurized, and long branches were cut off in the middle to make the crown ventilated and transparent. If there is no seed left after the flower withers, the residual flower and two buds at the lower part of the ear can be cut off to reduce nutrient consumption and promote the germination of new branches and the formation of flower buds. After defoliation, it can also be pruned once to ensure that the crown is round and beautiful, which is conducive to growth and flowering in the coming year.
Lilacs have few pests and diseases. The main pests are aphids, marsupials and moths. It can be controlled by spraying 800- 1000 times of 40% dimethoate emulsion or 1000 times of 25% imiphos emulsion.
Lilacs are mainly used for garden viewing. Because of its unique fragrance, huge and lush inflorescences, elegant and harmonious colors and plump and beautiful posture, it has long enjoyed a good reputation among ornamental flowers and trees and has become an indispensable flower in gardens at home and abroad. It can be planted on the roadside, lawn or sunny slope, along the forest edge with other flowers and trees, alone in front of the courtyard and outside the window, or interspersed with various lilacs to form a special lilac garden. It is also suitable for potted plants and is a good material for cutting flowers into bottles. Clove has strong resistance to toxic gases such as sulfur dioxide and hydrogen fluoride, so it is also a good material for greening and beautifying industrial and mining areas.
This genus likes warm, humid and sunny, and many species also have certain cold tolerance. The annual average minimum temperature in Beijing is about-19- 16℃. All the existing cultivated varieties can safely overwinter in Beijing, and can grow, blossom and bear fruit normally every year. According to records, lilac and Hungarian lilac can resist the low temperature of about -35℃. The annual average minimum temperature in Harbin, China is about -26℃, and sometimes it can reach -36℃ or lower. There are more than 10 species of lilacs cultivated in the open field, which belong to 2 subgenera and 3 groups. Because the flower buds of this genus are mostly located on the L-6th pair of buds at the top of branches, when the flower buds of 1-3 are damaged by cold, the flower viewing effect of the whole plant will not be affected.
Syringa plants also have strong drought tolerance. July-September in Beijing is rainy season, and other months are dry season. Especially from April to June, the temperature rises rapidly from 10℃ to around 28℃. At this time, all kinds of lilacs are growing and blooming rapidly. At this time, there was less rain, and the evaporation increased sharply to 230-280 mm, but as long as the plants were watered twice a month, all kinds of lilacs could grow well and flourish.
The requirements for soil are not strict and barren. Except for strongly acidic soil, it can grow normally in all kinds of soils, and neutral soil with loose soil is the best. It is generally forbidden to plant in low-lying areas. Water accumulation can cause disease or cause the whole plant to die.
Clove is a positive tree, which likes to grow in sunny places, grows weakly in the shade or semi-shade, and has few flowers, but a few species such as Yunnan clove need warm air. If this plant is to be cultivated in the north, it is best to choose a small environment with high air humidity, such as planting in the lee of the sun or on the edge of sparse forest. All kinds of lilacs can bloom after sowing for 3-4 years. However, the species of Ligustrum lucidum will not bloom until 4-5 years after sowing, but will bloom after cutting or grafting 1-2 years. Five years later, the flowers bloomed. The growth potential is strongest in 5-20 years. The age when it gradually declines, but it can still maintain its life for a long time. Take 180 as an example.
(1) Lilac-symbolizes diligence and humility, and symbolizes good school spirit.
(2) Lilacs are elegant. Its white or lavender flowers often go unnoticed. Maybe some people think it's not beautiful. If beauty means bright and dazzling, it is really cute. It is not greedy for praise, nor extravagant for love, but it is of extraordinary value and contains nothing; In order to make people's lives happier and better, it selflessly dedicated its small body to the cause of Chinese medicine. Lilac is gentle in character, but it is not lacking in enthusiasm. Although dressed in plain clothes, there is a lot to show inside. Lilacs are serious. They are soft and strong.
(3) In France, "when lilacs are in full bloom" refers to the best climate. The lucky flower for people whose birthdays are in May 17 or June 12 is lilac. In the west, this flower symbolizes "the innocence, first love and humility of young people".