Winter jasmine leaves are opposite, with three compound leaves and simple leaves at the base of branchlets; Leaf rachis with narrow wings, petiole 3- 10 mm long, glabrous; Leaves and leaflets are slightly hairy on both sides when they are young, but only the leaves have eyelashes when they are old; Leaflets are ovate, oblong or elliptic, narrowly elliptic, sparsely obovate, with sharp or blunt apex, short apex, wedge-shaped base, leaf margin rolled back, midvein slightly concave at the top, convex at the bottom and inconspicuous lateral veins; The terminal leaflet is large, with a length of 1-3 cm and a width of 0.3- 1. 1 cm, sessile or the base extends into a short stalk, and the lateral leaflet is 0.6-2.3 cm, 0.2-1cm, sessile; The single leaf is ovoid or ovoid, sometimes suborbicular, 0.7-2.2 cm long and 0.4- 1.3 cm wide.
Jasminum nudiflorum was solitary in the leaf axils of last year's branchlets, sparsely at the top of branchlets; Bracts leaflike, lanceolate, ovate or elliptic, 3-8 mm long and 1.5-4 mm wide; Pedicel 2-3 mm long; Calyx green, 5-6 lobes, narrowly lanceolate, 4-6 mm long, 1.5-2.5 mm wide, with a sharp tip; Corolla yellow, 2-2.5cm in diameter, 0.8-2cm in length of corolla tube, 1.5-2mm in base diameter, gradually expanding upward, with 5-6 lobes, oblong or oval, 0.8- 1.3cm in length, 3-6mm in width, and sharp or blunt apex.
Winter jasmine is fond of light, slightly tolerant to shade, slightly cold, fond of sunshine, drought and waterlogging. It can overwinter in the open air near North China and Yanling County, Henan Province. It needs a warm and humid climate, loose and fertile sandy soil with good drainage, which grows vigorously in acidic soil and grows poorly in alkaline soil. The roots germinate vigorously. The landing part of the branch takes root easily. Most of them were born in the bushes on the hillside.
Welcome to spring can be carried out when the buds sprout in spring. When transplanting in spring, some overground branches should be cut off and lodging soil should be brought. During the growth process, pay attention to the fact that the soil can't accumulate water and be excessively dry, and properly fertilize 2-3 times before and after flowering. Prune and reshape in autumn and winter to keep more new flowers.
After flowering in spring, winter jasmine should be cut short, and decomposed cake fertilizer or base fertilizer should be applied once, and manure should be applied every two months during the growing period. Remember to apply more phosphorus and potassium fertilizer in the later growth stage to promote the branches to be stronger after pruning. Daily management is mainly to keep the soil moist without watering. When the climate is dry, it can be used to increase humidity and prevent water from accumulating in the basin after rain. In summer, when the head of the fierce mouth has high temperature, it is more beneficial to move to the semi-shade. Before and after the Spring Festival, move the flowerpot into the greenhouse or plastic shed, keep the room temperature at about 15℃, and you can see the flowers in about 15 days.
Spring can be grafted with water wax seedlings with breast diameter above 2cm, and abdominal grafting can be carried out at 1m or a certain height when budding in early spring. Grafting was carried out with branches of Spring Festival in that year as scions with the length of 8- 10 cm. Then tie it tightly with a film, wrap it in a plastic bag, and gradually tear the bag after the branches survive, so that they can breathe freely to exercise seedlings, pick their hearts to promote side branches and cultivate crown shapes. Spring Festival is adaptable, light-loving, cold-resistant, drought-resistant, alkali-resistant and afraid of waterlogging. The soil requirement is not high, and it can grow in slightly acidic, neutral and slightly alkaline soils, but it grows best in loose and fertile sandy soil.
Planting is usually carried out after flowers wither or in mid-September. If you want to cultivate the root-lifting type, you can raise the root properly when planting, but don't raise it too high at a time, otherwise it will be bad for growth. Because it is yellow, we should choose light blue, purple and black pots when planting to coordinate the colors of pots and flowers. If cultivated properly, there will be yellow flowers in spring, green leaves in summer and autumn, green vines in winter and spring all year round.
Spring branches droop in the Spring Festival, and flowers bloom first and then leaves in late winter and early spring, with golden color and green leaves. In landscaping, it should be arranged at the lakeside, stream bank, bridge head and corner, or planted around lawns, forest edges, slopes and houses for flower viewing in early spring. The greening effect of the Spring Festival is outstanding and quick, so it is widely used everywhere.
Winter jasmine, plum blossom, narcissus and camellia are called "four friends in the snow" and are one of the common flowers in China. Winter jasmine is not only dignified and beautiful in color, but also extraordinary in temperament. It has the characteristics of not being afraid of cold, not adapting to local conditions and strong adaptability, and has always been loved by people.
Shi Zhen said: people plant it everywhere. It is overgrown with weeds, two or three feet high, with square stems and thick leaves.
Leaves are like tender pepper leaves without teeth, pale face and pale back. Branchlets on nodes, one with three leaves. Small flowers bloom at the beginning of the first month, like Daphne, yellow and not strong.