Fairy ball, commonly known as grass ball, also known as Changshengqiu, is a perennial succulent and pulpy herb of the Fairy Family. The stem is spherical or oval, with a height of 25 cm. It is green, and the sphere has several longitudinal edges, with dense needles on the edges, which are yellow-green, different in length and radial. Flowers are born in longitudinal thorns, silvery white or pink, long trumpet-shaped, up to 20 cm long, with scales outside the trumpet and long hair on the scales. The cactus usually blooms in the early morning or evening and lasts for several hours to one day. Many small balls are often born on the side of the sphere, which are beautiful and elegant. From the outside, cactus can be divided into velvet, wart, treasure, hairy column, strong thorn, sea urchin, terminal flower and so on. The prickly hairs of cactus are also divided into long, short, thin and dense; Yan Mao has red, yellow and golden colors. The planting method I is: See the article Planting method of cactus 22: 10 on March 20, 2008. As long as it is properly maintained, cactus not only grows fast, but also has bright spheres and lush flowers. One temperature cactus likes high temperature and dry environment, and the room temperature in winter should be kept above 20℃ during the day and the temperature at night should not be lower than 10℃. Too low temperature is easy to cause root rot. Second, the illumination cactus requires plenty of sunshine, but it can't be exposed to strong light in summer, so it needs proper shade. Indoor cultivation can be illuminated by light to make it grow healthily. The soil used for potted cactus with three pots of soil requires calcareous sandy soil (or sandy loam) with good drainage and air permeability, which can be prepared by mixing loam, humus soil and coarse sand with limestone gravel or old lime wall debris 1 part, or loam, coarse sand and broken bricks, humus soil and old lime wall debris with 1 part each. When cultivating, a small amount of broken bricks and tiles should be placed at the bottom of the basin to make the drainage smooth. Fourth, it is best to plant the pots in early spring, and the flowerpots should not be too large, so that they can accommodate the spheres and have a slight gap. The flowerpot is too big to be absorbed after watering, and the air in the pot is blocked, which is easy to rot the root system. A few species with straight roots, such as bird feather jade and giant elephant ball, require a deeper cone. For species with shallow roots, such as silver hair balls and grandson balls, shallow common flowerpots can be used. Five methods of changing pots When changing pots, part of old roots should be cut off, and then planted in pots after airing for 4-5 days. The planting should not be too deep, and the root neck of the ball should be flat with the soil surface. In order to avoid root rot, the newly planted cactus should not be watered, but only sprayed 2-3 times a day, and watered a little after half a month, and then watered gradually after a month when new roots grow. Sixth, watering is the growth period of cactus in summer, with high temperature and large water demand. It must be watered fully, and it should be done in the morning and evening when the temperature is low. It is hot at noon, and watering is easy to cause the ball to burn. In the hot rainy season, water should also be properly controlled. For those cactus whose top is sunken, be careful not to pour water into the sunken place to avoid rot, and pay more attention to watering in the evening. During winter dormancy, watering should be controlled to keep the basin soil not excessively dry. The lower the temperature, the more dry the basin soil should be. Adult big balls are more drought-tolerant than small seedlings. Watering in winter should be done in sunny morning. With the increase of temperature, the plants will gradually break away from dormancy, and the watering times and amount will gradually increase. Fertilization Potted cactus can also be properly fertilized during the growing season, especially when grafted with Trigonella, and more attention should be paid to fertilization. The fertilizer can be applied once every10-15 days. Pay attention to the control of fertilizer and water after autumn, generally once a month, and stop fertilizer until1early October. If the fertilizer is not controlled, the cactus will continue to grow, and the tender sphere will be vulnerable to freezing damage during the winter. Pay attention not to touch the ball when fertilizing, and spray it with water if it touches the ball. Prevention and control of pests and diseases in high temperature and poor ventilation environment, pests and diseases are prone to occur. The disease can be sprayed with carbendazim or thiophanate; Pests can be killed by spraying dimethoate. No matter what kind of liquid medicine is sprayed, it should be done outdoors. I hope this will help you. . .