Microgreen celery contains many vitamins and minerals, including: Vitamins: A, B, C, and E Minerals: Potassium, iron, magnesium, phosphorus, and calcium Other nutrients: Dietary fiber Micro Celery: Intense Flavor Without the Tough Strings ... Microgreens are often more concentrated in nutrients than mature greens, sometimes containing up to nine times more vitamins and minerals. They also contain a wider variety of antioxidants than mature greens.