| It's really difficult to diagnose a plant problem without seeing it. The white leaves might indicate sunscald or a nutrient deficiency or a reaction to the weather. Or, you may be seeing symptoms of a disease. Bean mosaic diseases cause plants to turn a yellowish green and produce few or no pods. The leaves on infected plants are a mottled yellow and are usually irregularly shaped. Bright yellow or brown spots on the leaves or water-soaked spots on the pods are signs of bacterial bean blight. Bacterial blight is best controlled by planting disease-free seed; avoiding contact with wet bean plants; and removing all bean debris from the garden at the end of the season. I hope this information helps you troubleshoot. |
