Very acid soils (pH 4.0 to 5.0) may contain high amounts of aluminum, iron or manganese, which are toxic to some plants. Very acid soils also inhibit the bacteria that breaks down organic matter and results in the tie-up of nitrogen and other nutrients.
About this Author
Melody Lee worked as a newspaper reporter, copywriter and editor for 5 years. In addition, she has edited magazine articles and books. Lee holds a degree in landscape design and is a Florida master gardener. She has more than 25 years of gardening experience, which includes working at nurseries and greenhouses.