How do you lower Alkaline Levels in soil?

Alkaline soils occur in many parts of the country. High alkaline levels harm garden plants by interfering with their uptake of soil nutrients. Alkaline soils are common in areas with low rainfall or areas that have been heavily irrigated.

Spread sphagnum peat moss over your garden plot in an even layer about 2 inches thick. Do this at the start of the growing season. Work it into the top 10 inches of soil with a garden fork or tiller/cultivator. Sphagnum peat moss is acidic, with a pH of around 4, which balances soil alkalinity. But it is expensive for large garden plots.