Ash Gourd Seeds the key to the popular Ash Gourd, is a good source of vitamin C, B1, B3, Flavonoids and carotenes the famous antioxidants used to protect body and skin. This all-seasonal star takes 5-10 days to germinate and needs nutritional soil. Also known as Winter melon, this vegetable has numerous health benefits including very good for digestion and ulcer treatment among others.