Blueberry plants grow best in acid soils (pH 4.0 to 5.0) that are well-drained, loose, and high in organic matter. The soil water level should be at least 1 foot below the soil surface or roots will suffocate. Soil pH (degree of acidity or alkalinity) can be determined by sending a sample of the soil to the University of Minnesota Soil Testing Facility. Instructions for taking a soil sample, and containers for sending a sample can be obtained through your county extension office. Most garden soils in Minnesota have pH readings above those that are optimum for blueberries (most soils are too alkaline).
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