Microgreens, as its name suggests, are plants that are harvested at an early stage, usually before 14 days of germination. That means, they are basically picked up at the moment when the first leaves are forming. According to recent scientific studies, it has been proven that these microgreens have nutritional benefits above conventional vegetables in their mature stage, since here the nutrients and antioxidants are 4 to 40 times more concentrated.
We can give the example of purple cabbage, whose microgreens are about 40 times richer in vitamin E and 6 times richer in vitamin C than the ripe purple cabbage. But this scenarios caters to all other vegetables and herbs.