Too much light: high intensity sunlight may burn the orchid and make it yellow. At this time, it is necessary to move it to a half shade, maintain ventilation, cut off yellow leaves, and so on. Too much water: over watering can cause it to turn yellow. At this time, it is necessary to take it out of the basin, cut off rotten roots and yellow leaves, and then plant it with new soil. Too much fertilizer: the application of heavy fertilizer may cause it to turn yellow. At this time, the surplus fertilizer in the soil should be washed away with water, and then the fertilization should be suspended until it recovers.
