Bell peppers grow in ascorbic acid soil, making them an acidic plant. Acidic levels in the soil determine the color of the bell peppers. The lower concentration levels of ascorbic acid turn bell peppers a black, purple or white color, while higher concentration levels turn bell peppers green, yellow, red, brown or orange.
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Richard Bryant has been writing professionally since 2008. His work appears on various websites, including Just Ask Kim. He is pursuing a Bachelor of Arts in psychology and journalism from the University of Michigan-Flint.