You can grow it at home!
Wheatgrass and its nutrients
Wheatgrass is a common wheat plant (it belongs to the wheat family), which looks like a lot like lawn grass. In the west, consumption of wheatgrass started in the 1930s as a result of experiments conducted by Charles F Schnabel, an agricultural chemist. In his first experiment, he used fresh cut grass to nurse dying hens back to health. Feeding on wheatgrass, the hens not only recovered but began to produce eggs at a higher rate than a healthy hen.