Rewilding means rebuilding natural ecosystems after human disturbance. The focus is on restoration of biodiversity, natural processes, and food webs to create resilient ecosystems. Rewilding attempts to return ecosystems to their original trophic structure and previous processes.

Rewilding can be intentional, for example with the introduction of large mammals, or passive, through withdrawing human management and allowing natural processes to return. The main goals are to reduce biodiversity loss and restore and preserve functional ecosystems.

Fungal rewilding means restoration and support of belowground fungal communities. Healthy belowground fungal communities support aboveground ecosystem recovery, biodiversity, resilience, and climate regulation. The majority of Earth's biodiversity is located belowground.

Fungal rewilding processes seek to restore and recreate ecosystem conditions which support fungal biodiversity. In other words, conditions which support the symbiotic relationships mycorrhizal fungi form with plants.

Up to 30% of Earth's soils are classified as moderately to highly degraded. Rewilding offers solutions for restoring degraded ecosystems. Fungal rewilding can help recover belowground biodiversity, and damage to underground biodiversity from various impacts: agricultural chemicals, cattle ranching, over-grazing, deforestation, mining etc.