Gardeners who want the best results should have their soil checked. A soil test will determine the pH of a soil sample in a laboratory and can ensure that soil pH levels are at an optimum range for planting.

Soil testing is essential for sustaining a growing garden, Based on the results, experts can recommend adjustments or additives that will yield healthier plants.

Additives to soil include agricultural limestone, which is commonly used to raise the soil pH (lower soil acidity), and elemental sulfur, which is commonly used to lower soil pH (raise soil acidity).

Many common garden plants like sweet corn, tomatoes, peppers, and cucumbers, require a low soil acidity. When soil acidity is too high, aluminum and manganese become present in the soil solution at toxic levels for these plants, causing them to look stunted or even die.

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