Hibiscus Chlorosis in Arizona Heat: Fertilizer Advice

Ron's hibiscus in Gilbert, AZ show veiny green upper leaves and pale lower leaves. The nursery recommended high‑phosphate fertilizer, but desert soils are already high in phosphorus and potassium. A balanced 10‑10‑10 or 7‑2‑7 is better, plus slightly acidic soil.

See tropical hibiscus fertilizer guide.