Interveinal Chlorosis

Interveinal chlorosis is a yellowing of the leaves between the veins with the veins remaining green. In plants with strap-like leaves such as the daylily this results in a striped effect. While there are several possible causes, this symptom frequently indicates a nutritional imbalance. The accompanying image illustrates a daylily exhibiting interveinal chlorosis. In this particular case, leaf tissue analysis indicated the cause was probably manganese deficiency induced by high soil pH.

Photo courtesy of Jay and Marcia Laundre, Jay Laundre, photographer. Used with permission

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The American Daylily Society