Answer: There are two types of lime used in gardens. Dolomtic lime has magnesium which will change the color. Calcitic limestone consists largely of calcium carbonate, and dolomitic limestone is a mixture of both calcium and magnesium carbonates. Dolomitic limestone should be used on soils with a magnesium soil test of 100 or less, as it is an excellent and inexpensive source of magnesium for acid soils. On soils with magnesium tests greater than 100, calcitic or dolomitic limestone may be used. Check the package label for the ingredients. I think you'll find your answer there.
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