Wildflower strips are measures to improve aboveground biodiversity and pollination and pest control services in agricultural landscapes. The aim of this project is to evaluate impacts of wildflower strips on soil-dependent arthropods, soil macrofauna and soil properties, both in wildflower strips and in adjacent arable fields. We will investigate whether wildflower strips enhance earthworm populations and improve soil health in adjacent arable fields, what is the impact of wildflower strip age, and how tillage affects overwintering survival of soil-dependent arthropods and survival of earthworms. Sampling and measurements will be performed in transects that run perpendicular to wildflower strips into arable fields to analyse impacts as a function of distance from wildflower strips. The project will contribute new insights on wildflower strips beyond aboveground processes, namely by assessing impacts on soil macrofauna and soil properties that in turn can benefit crop growth. The project will contribute to a more comprehensive understanding of the agronomic and ecological value of wildflower strips, potentially informing future agricultural practices and subsidy schemes.