1. The flowering period of alfalfa is from May to July every year, and the first harvest is needed in early May, because the crude protein content in alfalfa is the highest at this time.

2. Alfalfa can be harvested three times a year, and the third harvest should be one month before the early frost. If it is harvested after this time, not only the forage quality will be reduced, but also the nutritional content will be much lower.