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Soil pH levels range from 0 to 14, with 7 being neutral. Levels below 7 are acidic, and those above are alkaline. Neutral soils are less common than either extreme and tend to cluster at the ...
“Most soils in the Chicago area are a little bit alkaline, in the range of 7 to 7.5,” Yiesla said. That can be a challenge for some garden plants: The majority grow best in soil that is ...