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The green thorn fruit begins to mature in mid-April. In places with lower altitudes, it matures in large quantities in May, and in places with higher altitudes it matures in June. The sign of ripeness is when the fruit changes from green to dark brown.

Green thorn fruit, also called Anas fruit, also known as green thorn tip and oil fruit, is a rare perennial woody oil plant. Its kernels can be squeezed for oil and the oil cake is the best feed. It is an economic plant with great development and utilization value.