Water and air requirements of orchids

Controlling moisture is the most fundamental condition for raising orchids. The texture of the orchid leaf is thicker and the surface is protected by the stratum corneum, so the orchid leaf does not consume a lot of water. The pseudoscale and fleshy roots of orchid can store certain nutrients and water, so they are more tolerant to drought. In addition to rooting, germination and rapid growth period, more water is needed, and less water is consumed at other times. If there is too much water, causing stagnant water in the soil and blocking the breathing of the roots, the roots are easy to rot. Too much water will also cause the cell wall of orchid leaves to be filled with water and the stomata on the leaves to open, resulting in weak nutrients, resulting in delicate tissue, poor growth and diseases. Orchids are "like rain but afraid to be scrawled, happy and moist and afraid of wetting". Due to the different air humidity in spring, summer, autumn and winter, the growth rate of orchids is different, and the water requirements are also different. According to this, "whether you can plant orchids or not mainly depends on whether you can water them or not."

Orchids like circulating and pollution-free air. Orchid cultivation places should be away from gas, oil fumes, away from dusty places. Lampblack and dust are attached to the leaves, which will block the respiration of the leaves and affect the photosynthesis. Poor ventilation will attach bacteria and viruses to the leaves, endangering the growth of orchids.