· however, when all leaves turn yellow , it may signal an underlying issue such as too much direct sunlight, low temperatures, or root rot, which can impact orchid health. · gardeners who plant orchids will know that miserable feeling of wanting to help a yellowing orchid regain its crisp green color. When you start seeing yellow , brown and black blotching and streaking along with yellow discoloration on your leaves , it is time to start worrying. · when you notice your orchid leaves turning yellow , the first step is to go through all of these nine reasons and determine what the problem is. · discover 12 reasons why orchid leaves turn yellow and learn how to fix them for healthier, thriving plants This article sheds light on some of the mistakes people make when planting an orchid and how negative side effects of those mistakes can be reversed. These tips from an orchid expert will help you find the cause, including overwatering, root rot , or light issues. At best, you might have had an exposure to cold or too much sun, or you may have to battle a bacterial or fungal infection. · this guide breaks down the most common causes of yellow orchid leaves , from normal aging to care-related problems, and provides practical solutions you can apply right away to restore your plant’s health. · if you find yellow leaves on your orchid, dont panic. It could be the natural lifecycle, or your plant could be under stress.