Bush regeneration (or 'regen') is the rehabilitation of bush from a weed affected or otherwise degraded area to a healthier community of native plants and animals. It has also been defined as “The practice of restoring bushland by reinstating and reinforcing the systems’ natural regeneration processes”

Weeds are often the greatest threat to remnant vegetation, and so bush regeneration is closely associated with weed control. Weed management is not the aim of bush regeneration but one of the tools used to help native plants.