Soil Test 919-394-5095
The soil pH for bedding plants should be between 5.5 and 6.5. Most woody plants will grow in soil with a pH range between 6.0 and 7.0. Plants such as Japanese pieris, azalea, blueberry, camellia, mountain laurel, and rhododendron grow best in soil with a pH of 5.0 to 5.5.
If lime is needed, incorporate it into the soil before planting. Lime applied on the soil surface moves slowly (about 1 inch per year). Lime can be applied any month, but winter application is recommended.
Adjust pH to meet plant needs.
Apply lime to raise pH.
Apply sulfur, iron sulfate, or aluminum sulfate to reduce pH.