Plantoid had a focus on soil exploration and morphological adaptation via a number of rich sensors while GrowBot will develop faster robots that could move by growing while also adapting their bodies to external environments.
In this Horizon article, Dra. Barbara Mazzolai, from the Italian Institute of Technology (Centre of Micro-BioRobotics) and scientific coordinator of Plantoid and GrowBot projects, talks about the these projects and the general idea of plant-inspired robots. Plantoid includes partners from Italy, Spain and Switzerland, while GrowBot's partners come from Italy, Germany, Spain, France and Israel.
Particularly interesting to see is the video on how these robots behave like plants coiling around plants to climb.