According to the pilot of the tailwheel-equipped airplane, he had not landed at the destination airport “in several years.” Although the airport had a paved runway, the pilot preferred to land on grass rather than pavement. Since he had landed on the grassy area adjacent to the left side of the runway during his previous visit, he decided to land on it once again. From the air, “it looked good," so he proceeded to land. During the landing, he realized that the grass was not mowed and was "over waist deep." Upon touch down, the main landing gear caught the grass, the airplane nosed over, and the pilot sustained a fractured vertebrae. For grass operations, the airport had been using the mowed area to the right side of the runway.