green leaves turn yellow and fall off. One plant completely and another just starting.
Certified GKH Gardening Expert
Are these starting to yellow from the bottom of the plant up, or the top of the plant down? There could be a few reasons why this is happening. Has it been excessively hot or dry recently? Is there any other spotting other than the yellowing, or is this the only symptom? Overwatering can cause the same symptoms, along with many more as well.