Crataegus pinnatifida belongs to Verbenaceae shrub, also known as five-color plum and smelly grass. Originated in America, it is now cultivated in Guangdong, Hainan, Taiwan Province, Guangxi and other places in China. It blooms from May to September every year and can be used to make bonsai. At the same time, it has the medicinal value of cooling, relieving fever, promoting blood circulation and stopping bleeding. ? Lantana camara is an erect shrub with many branches and square columns. Leaves opposite ovate, wrinkled. The flower heads are arranged in a conical shape again, and the flowers turn into orange, red and pink at first. There are wild plants everywhere except cultivation. This species is a cultivated ornamental plant and a honey source plant. The plant has a long flowering period and a large amount of honey, and its roots, leaves and flowers are also used as medicine. However, it should be noted that this species is a poisonous plant, and there have been many cases of children eating by mistake in Hong Kong, which can be fatal. Tropical America; I like light and warm and humid climate. Strong adaptability, drought and barren resistance, not cold resistance, and good growth in loose, fertile and well-drained sandy loam.

This species is a tropical plant, which likes high temperature and high humidity, and is also resistant to dry heat and cold. Its cold resistance is poor, and its leaves do not fall off when the temperature is above lOC. Avoid ice and snow, have strong adaptability to soil, endure drought and water, and are not strict with fertility requirements.

Five-colored plum is native to tropical America, and there is a small amount of wild plum in southern China. Like warm, humid and sunny environment? Not cold-tolerant. The prepared bonsai can be maintained outdoors in the sunny place during the growing season from spring to autumn, even in midsummer, it does not need shading, but it requires good ventilation. If the light is insufficient, the plants will grow in vain, the stems and branches will be thin and long, and the flowers will be scarce, which will seriously affect the appreciation. Keep the basin soil moist during the growth period, avoid over-drying, and pay attention to spraying water on the leaves to increase the air humidity; Apply a thin fertilizer mainly containing phosphorus and potassium once every 15 days to provide sufficient nutrients and make the plants blossom more. ?

Five-colored plum grows rapidly, so the branches and leaves that affect the shape should be cut off in time during cultivation to maintain the beauty of the tree. After each flowering, the excessively long shoots should be cut short, and the plants should be re-cut in late autumn and early winter before entering the house, and the branches of the current year should be appropriately cut short. In winter, plants can grow and bloom normally if they are moved to the sunny place indoors, and they should be watered, fertilized and pruned properly if the room temperature is above 15℃. If you can't keep such a high temperature, control watering and stop fertilization, so that the plants can hibernate, and you can safely overwinter above 8℃. Turn over the pots once a year in spring, and then trim and reshape the plants, and cut off dead branches, weak branches and other branches that affect the tree shape. Five-color plum can be propagated by sowing, cutting and layering. After the fruit is ripe, it is picked and piled, soaked in water and washed to remove the pulp, and then the seeds are obtained. Seeds should not lose water, so they can be sown in autumn, or stored in mixed sand, and then sown in spring. The temperature should be kept above 2C in the germination stage after sowing. The germination rate is about 6%, and the seedlings sown in the south can bloom in the autumn of that year. Cuttings are carried out in May, and annual branches are taken as cuttings, and each section is divided into one section. The upper leaves are kept and half of them are cut off, and the lower parts are inserted into the soil, which is maintained in the shade and sprayed with water frequently. It takes about l months to take root and sprout new branches. There are many branches of plants, which take root in the soil, so the flexible branches are cut and pressed into the soil, and the roots are cut off and divided into plants after the root system grows. ?

1. Loose and fertile sandy loam is suitable for potted plants, and the requirements are not strict. Applying decomposed liquid fertilizer every 1 days during the growing period, combined with watering, and spraying 3% urea twice every 1 days can make the leaves thicker and greener. ?

2. Five-color plum grows vigorously and has strong germination ability, so attention should be paid to pinching and pruning during the growing period. Combined with disc changing, head pruning is carried out, that is, 2-3 buds are left from the base of the plant, and the rest are all cut off, and attention is paid to thinning the dense branches and cross branches. Cut off the pedicel in time after each flower, so as not to consume nutrients, but also to promote the development of new shoots and flower buds. .

3. In order to make the five-color plum blossom to welcome the National Day, we should erase the branches that germinated that year in late August, leaving only three pairs of buds at the base, and strengthen the management of water and fertilizer. By early September, topdressing the roots with 3% urea for 1-2 times, then we can fully welcome the National Day. ?

if the five-color plum is managed normally according to the above measures, it can grow vigorously and its flowers are flourishing. If it is allowed to grow naturally, it can still bloom by the end of October, but it is near the late flowering stage and its flower potential is not strong.

what's the management method of lantana with bright colors and long flowering period?

In order to make Lantana bloom more brightly, last longer and attract more butterflies, we need to master the following conservation techniques:

1. Choose sandy loam with deep, fertile and loose soil layer. Potted soil can be mixed with humus soil, garden soil, vinegar residue and decomposed organic fertilizer in a ratio of 2: 6: 1.

2. Sufficient base fertilizer should be applied before planting, and in the peak growth period (May-October), thin and decomposed cake fertilizer water or thin human excrement and urine water should be applied every 1 days, and timely fertilization should be applied after flowering, so as to make the flowers bloom continuously.

3. The formed plants should be pruned frequently to remove weak branches and diseased branches, and also cut short appropriately, and the residual flowers should be picked in time after flowering.

4. Sufficient light should be given during the growing period to keep the soil moist; In particular, the flowering period should not make the soil too dry.

5. In winter, the plants should be moved indoors for maintenance, fertilization should be stopped, and watering should be controlled. The temperature should be kept above 1℃, and the excessively long new branches should be pruned properly. Before leaving the house in the next spring, the pots should be turned over and basal fertilizer should be applied.