The leaves of the sweet potato plant are light green, heart-shaped and have prominent veins that radiate out from the base of the leaf. 金 饲草生产学 College of animal scienc aaee。t 西北农林秀 __________________________________________________________________ College of animal science, Northwest Agriculture & Forestry University  西北农林科技大学动物科技学院草业科学系 •  The leaves of  the sweet potato plant are  light green,  heart­shaped and have  prominent veins that radiate out from the base  of the leaf