What are the water and air requirements of orchids?

Controlling moisture is the most fundamental condition for growingorchidswell. Orchid leaves are relatively thick in texture, with a waxy cuticle on the surface for protection, so orchid leaves do not consume large amounts of water. The pseudobulbs and fleshy roots of orchids can store a certain amount of nutrients and water, so they are relatively drought-tolerant. Apart from the root-developing and sprouting stages and the rapid growth period, when they need more water, they consume less water at other times. If there is too much water, causing waterlogging in the soil and blocking root respiration, root rot easily occurs. Too much water also causes the cell walls of orchid leaves to become waterlogged, opening the stomata on the leaf surface, resulting in diluted nutrient content, which in turn causes weak tissue, poor growth and disease.Orchids"like rain but fear waterlogging, like moisture but fear dampness." Because air humidity differs in spring, summer, autumn and winter,orchidsgrow at different rates and have different water requirements. Accordingly, there is a saying that "whether you can grow orchids mainly depends on whether you can water them." Orchids like circulating, unpolluted air.Orchid growingsites should be far from coal gas and cooking fumes, and far from places where dust flies about. Cooking fumes and dust adhering to the leaf surface will block leaf respiration and affect photosynthesis. Poor air circulation will cause bacteria and viruses to accumulate on the leaf surface, harming orchid growth.