Lowering the pH level can be accomplished by the addition of elemental sulfur or aluminum sulfate. The cost of lowering the pH may be prohibitive for successfully marketing the plants. However, raising the pH is more feasible and can be accomplished by the addition of liming materials. Your county extension agent can assist you in preparing and submitting a soil sample for testing to determine pH and nutrient status. Water Good quality water in sufficient quantity is critical regardless of the crops to be grown.
Water is the most limiting factor when container grown stock is being considered.
All water sources to be used in production must be tested. However, seedlings and transplants are normally only tolerant of water with 200 ppm. Your county extension agent can help with submission of water samples for testing. Total soluble salts, pH, calcium, carbonate, magnesium, and sodium levels should be determined prior to growing nursery stock. Municipal water is generally fine but becomes expensive in large production areas.