an even-aged silvicultural harvest and regeneration system that removes most of the mature stems. A number of trees (generally, 4 to 10 per acre, singly or in groups) are retained to provide seeds to establish the new stand.

A method of regenerating a forest whereby all trees on an area are cut except for several per acre which are left to provide seed to reseed the harvested area. Usually 5 or 6 tree per acre are left. After the new stand is well established, the residual trees are harvested. The method is used to regenerate species not tolerant of shading.