When should indoor flowers be watered in spring?
Spring, autumn and winter, around 10 in the morning and after 4: 00 in the afternoon are the suitable time for watering flowers. At noon in midsummer, the temperature is very high, and the temperature of flowers and leaves can often reach 40℃. Clivia has a strong transpiration in Changchun, and the water evaporates quickly, so the roots need to absorb water continuously to supplement the loss of leaf transpiration. If cold water is poured at this time, although water is added to the pot soil, the root hairs are stimulated by low temperature due to the sudden drop of soil temperature, which will immediately hinder the normal absorption of water. At this time, because there is no preparation in the flower, the stomata on the leaf surface are not closed, and the balance between supply and demand of water is lost, which leads to the change of leaf cells from nervous state to wilting state, which makes the plant appear "physiological drought" and the leaves are burnt, which will cause the whole plant to die in severe cases. This kind of herbaceous flowers is especially obvious now, such as geranium, dill and aster. What are the most taboo to splash cold water at noon on a hot day? Therefore, don't water the flowers at noon in hot summer. In the same way, the temperature difference between morning and evening in winter is large, so it is necessary to water the flowers at noon when the soil temperature is close to the air temperature. Many flower farmers are used to watering at night and mistakenly think it is the best. In fact, on the contrary, especially in winter or indoors, if they water at night, the water will slowly lose, which will increase the humidity of the soil and air in the basin and easily lead to flower infection and freezing injury. Watering in spring is the key to raising potted flowers. Because the climate in spring is relatively dry and the air humidity is low, if the amount of watering is small, it will cause yellow leaves and fallen leaves, which will affect the growth and development of flowers; The choice of indoor ornamental plants is mainly that excessive watering will cause bud shedding or root rot, and even death. Judge whether the potted flowers need watering. If the surface color of the potted soil is reddish brown, press the surface of the potted soil with your fingers to feel soft and moist, and bounce the potted wall with your fingers to make a muddy and dull sound, indicating that the potted soil is moist and does not need watering; If the surface color of the basin soil turns pale and white, it is very difficult to press the surface of the basin soil with your fingers, and the sound made by knocking on the basin wall is crisp and loud, indicating that the basin soil is dry and needs watering. Frequency, time and amount of watering potted flowers. After spring, the temperature began to rise. When the flowers enter the growth period, the watering amount should be gradually increased. Generally, 1 flower is watered every 2 ~ 3 days, and then it is gradually increased to 1 flower per day with the increase of temperature, and it is watered twice a day in the high temperature stage in July. The watering time should be between 10 am and 4 pm. Different kinds of flowers have different habits and water requirements. Ferns, orchids, begonia and other flowers that like humidity should be watered more; Flowers that like drought, such as Sedum, cactus and agave, should be watered less; Bulb flowers should not be watered too much. Different growth stages require different amounts of water. The watering of flowers from dormancy to growth should be gradually increased; Flowers in the vigorous growth period should be watered more; Water should be controlled in the early stage of flower bud differentiation, squatting seedling stage and before changing pots; Water less in the early flowering period and the fruiting period, and water properly in the full flowering period; New pots or potted flowers must be watered thoroughly for the first time. The water retention capacity of cultivated soil is far from the same because of its different properties, so the watering amount should be different. Sandy loose soil, poor water retention capacity, should be watered more; Clay and flowers, the two main fertilization methods, have strong water retention, so there is less water. The amount of watering depends on the size and texture of the flowerpot. If the flowerpot is small, the soil will dry quickly, and the watering times will be more. If the flowerpot is large, the opposite is true. Clay basin has loose texture and good water permeability. The water lost by evaporation through the basin wall is more than that consumed by flowers, so water more. Pottery pots, glazed pots and purple sand pots are delicate in texture and have poor water permeability and air permeability, so they should be watered less; Plastic pots are impermeable to water and air, so water less.