Pretty much what he said. The only problem for us this year was not being able to Sept. plant winter wheat / alfalfa fields. We are an organic farm so we have to do that planting after sept. 15th. to avoid weavle problems but before frost..( alfalfa has to have it's 3rd. leaf before 1st. frost).Nope, it really shouldn't effect rotations at all. Spring planting dates are what it's all about it... not Fall/Winter harvest dates.