Green firmness without topdressing

This won't work in all conditions. But it sure worked well at Keya GC in Japan for the KBC Augusta Tournament. The greens haven't been topdressed for more than one year, and the OM2 level on the 18th green in this video is 20.4%. Despite that amount of surface organic material, the ball still bounces.

This is possible because the underlying surface remains firm. Holes haven't been punched for more than three years, so the soil is about as compacted…