The field of interactive textiles has many names, all describing textiles that interact with the environment, often using electronics to create interactivity. However, combining textiles with electronics creates hard to recycle materials. In this research, linen is proposed as a sustainable alternative, using its hygromorphic characteristics to evoke interactivity. Guided by the material driven design method, this research experimented with linen yarns and woven textiles, looking at their behavior when wetted. The results, showing which variables of a yarn and woven textile influence its behavior, are gathered in a design space overview and applied during the creation of a demonstrator. This demonstrator demonstrates how manipulation of the variables can create a piece behaving as intended. The design space overview provides designers who want to create interactive textiles using linen with design guidelines. Lastly, future product examples are presented showing the possibilities of using linen and its hygromorphic characteristics.