Every summer my Bahiagrass develops yellow spots even though I fertilized. What causes this?
Yellow spots or streaks indicate an iron deficiency. In the spring and summer, Bahia grows so rapidly that it cannot keep up with its own nutritional demand for iron. It is best to make supplemental iron applications and avoid heavy summer fertilization or fertilizing with a fertilizer high in water soluble nitrogen since this will encourage excessive growth and increased demand for iron.