Soil pH

Soil pH affects plants, soil organisms, and the availability of soil nutrients and metals for plant uptake. Because soil pH can be challenging to adjust quickly or after crops have been planted, it is important to understand what adjustments are needed sooner than later.

General information

Find information about managing soil pH for British Columbia soils in general:

• Nitrogen Fertilization as Related to Soil pH (PDF)
• Soil pH (PDF, 2.1MB)
• Acidifying Soils (PDF)
• Soil Acidity and Liming Facts (PDF)
• Evaluation of Agricultural Limestone (PDF)

South Coastal B.C.

Lower Mainland and Vancouver Island
With respect to information about soil pH, the western parts of Oregon and Washington State are generally comparable to South Coastal B.C.

• Acidifying Soil for Crop Production West of the Cascade Mountains (PDF)
  (Western Oregon and Washington)
• Applying Lime to Raise Soil pH for Crop Production (PDF, 1.5MB)
  (Western Oregon)

Interior B.C.

Areas outside of South Coastal B.C.
With respect to information about soil pH, the eastern parts of Oregon and Washington State are generally comparable to Interior B.C.

• Liming Acid Soils in Central B.C. (PDF)
• Eastern Oregon Liming Guide (PDF, 1.1MB)