1, papaya tree fruit in the north can't be eaten, because papaya tree in the north belongs to greening papaya tree, and the fruit of greening papaya tree is generally not recommended.

2. There are two main reasons. One is that papaya tree, which is used for greening, and papaya tree, which produces papaya, are not the same variety. This papaya tree fruit has bitter taste and poor taste.

3. Second, because it is in the middle of the green belt all the year round, it absorbs too much waste gas. If eaten, it may have a bad effect on the body.