These Persimmons (Diospyros virginiana) are not completely ripe, therefore they are not yet ready to eat. You will eat an unripe persimmon only once! There is an alum-like chemical in unripe persimmons that will pucker the inside of your mouth and make it feel like a dry cotton ball! Ripe persimmons are quite flavorful and a healthy fruit to eat. Raccoons and yellowjackets like ripe persimmons too!