The goal of our new PhenoSAR Demmin project is the evaluation of potential information inherent to Sentinel-1 time series for the monitoring of farmland. Hereby, a special focus is set on phenological development. Expected result is a multi-scale monitoring framework to detect various stages of plant growth and assess varying stress factors. This framework is based on interferometric and polarimetric Sentinel-1 time series and the underlying information about changes in plant geometry. An additional focus of this project is the elicitation of in-situ data, which allows for a more comprehensive evaluation of the developed framework. With the test site DEMMIN as study area, the project is connected to ongoing research in the DEMMIN 4.0 AgriSens project as well as the German TERENO and international JECAM Initiatives.