Method of forest management in which trees of different species in a given stand are maintained at many ages and sizes to permit continuous natural regeneration. Compare even-aged management.

Growing trees of varying ages and species side-by-side, and usually removing those that reach marketable maturity through various selective harvesting methods. Uneven-aged management is commonly used in hardwood growing regions and in regions with sensitive environmental or wildlife habitat characteristics.

timber management method that results in forest stands characterized by trees of many ages or sizes intermingled singly or in groups.

Methods used to regenerate and maintain a multi-aged structure by removing some trees in all size classes, either singly, in small groups, or in strips.

A management system that maintains 3 or more distinctly different age classes in a stand.

Forest management practices designed to establish and maintain an uneven-aged stand or forest, including use of the diameter limit, single-tree selection, or group selection harvest methods. Also see “Diameter limit harvest,” “Even-aged,” “Even-aged management” and “Uneven-aged.