Plant Leaves Turning Yellow. You can get a separate testing kit for this. To understand the science behind this we must first look at the contents of a typical leaf and its relationship to the plants overall health.
Again too much sunlight can result in hibiscus leaves turning yellow as well as the development of white spots which signal plant burn. The wrong soil condition is the worst enemy of basil plants but you can correct this by. The pH should be roughly neutral or 7 and it can get too acidic over time and organic compounds in your potting mix start to break down.
When youre potato leaves turn yellow late in the growing season its a safe bet theyre ready to harvest.
Overwatering Underwatering Pest Infestation Lack of sunlight Natural leaf fall. If the medium is too acidic or too alkaline it will end up turning the plants leaves into the unwarranted colours that we have mentioned in the title of the article. Potato plants turning yellow indicate that it is almost time to harvest. Sunlight issues can cause plants to have their leaves turn yellow too.