Answer: Most golf courses, at least once a year, aerify their greens. Aerification, or aeration, is the process of punching small holes in the green; actually, small cores of turf and sod are cut and removed from the green (read more about aerification and its purposes here), which leaves holes.It usually takes the green a couple weeks to heal following aerification.he process of reaching our conclusion may have been convoluted, but the answer to our original question-do you get relief from aeration holes on the putting green-is pretty straightforward. No, unless the local rule cited above is in effect. Return to Golf Rules FAQ.