Cowpea Vigna unguiculata. Cowpea is a legume vegetable crop that has a higher protein content than other legume vegetables. It is believed that the name cowpea is originally from Greece… Benefits Cowpea contains wonderful antioxidants that contribute to purifying the body and ridding it of toxins. One study has recently begun to show that it has an effective positive effect in combating free radicals that may cause some chronic diseases. Cowpea also contains high levels of vitamin C, which contributes to strengthening the immune system. Harvest begins in November. Packaging is available from 1 kg bag to 1 ton jumbo bag according to customer request