Golfers discuss the time for temporary or permanent closure of the golf course for the winter, and so do course managers. There are probably no general guidelines
because the grass, soil and climatic conditions vary greatly from site to site. Golf courses also experience different pressure from golfers to extend the playing season.

Final Winterplay on Summer Greens (PDF).

Canadian Turfgrass Research Foundation (CTRF) is a registered charity that raises funds for turfgrass research projects aimed at advancing education and scientific knowledge associated with the safe, recreational and functional use of turfgrass.