#HempFact Of the 3-million plus edible plants that grow on Earth, no other single plant source can compare with the nutritional value of hempseeds. Both the complete protein and the essential oils contained in hempseeds are in ideal ratios for human nutrition. Only soybeans contain a higher percentage of protein. However, the composition of the protein in hempseed is unique in the vegetable kingdom. Sixty-five percent of the protein content in hempseed is in the form of globulin edestin.