Make sure to give your alfalfa ground time to grow back before winter. Alfalfa will quit growing after the first hard freeze in Kansas, which occurs, on average, around Oct. 15, but can be as early as Oct. 1 or as late as Nov. 1. The timing of the last cutting impacts the winter survival and productivity of the stand in the following year. The last cutting, prior to fall dormancy, should be madeā¦