Through the purchase of land, as well as the reforestation and renaturation of intensively used agricultural land or former fallow land, fragmentation of the forest is to be prevented. While some sites can be left to regenerate naturally on their own, in other areas no forest has grown for decades and a planned intervention is necessary. Therefore, each site is examined and evaluated individually. Where biologists deem it appropriate, up to 200 different tree species from the region are planted. After planting, the young trees are cared for three years and fertilized several times with 100% organic earthworm compost. Subsequently, the areas are left to themselves, allowing a native forest to develop again.