Yamaboshi
Riddle: When does a strawberry tree never produce strawberries?
Answer: When it’s the Japanese Strawberry Tree.
The Japanese Strawberry dogwood tree known as Yamaboshi) in Japanese is really a cousin of the dogwood tree and no relation of the strawberry plant. It is so called because its fruit resembles a strawberry.
NATURE IN JAPAN 
Is the fruit of yamaboshi good to be eaten?
Yes, but it is a little tart