How to grow orchids with sand-based material? A detailed guide to the method

Sand-based material. Such as coarse river sand, sand grains the size of soybean kernels, rock sand weathered from weathered rock, etc. The sand material should preferably be mixed with about 7/10 bran material (the best is the leftover wood bran from cultivating winter mushroom and wood ear fungus spawn and the wood bran from discarded bran bags, whose special feature is that it can promote orchid root growth), for plantingCymbidium goeringii、Cymbidium faberiorCymbidium kanran, with very good results; it can also be used for growing other orchids. Rock sand weathered from weathered rock should first have the sand powder sifted out, so as not to affect drainage and air permeability. The sand material can also be mixed with 2/10-3/10 of fired soil or humus soil, or with sphagnum moss, to increase the nutrient content and water retention of the growing medium. Sand material has good drainage performance, so attention should be paid to replenishing water and nutrients.