The best range of PH for citrus trees is from 6 to 8. Citrus trees grow best in this range of PH.
All citrus trees need deep soil having both excellent surface and inner drainage system. The presence of strong, healthy trees is a good sign that the soil is satisfactorily deep and well-drained for citrus trees. Most citrus develops healthy in a soil pH range from 6 - 8. Avoid soils that have high caliche substance or are extremely salty, as citrus trees will not develop in such soils.