From student competition to green start-up. The idea of a plantable wall calendar was born at the end of 2017 as part of a start-up competition at the University of Erlangen-Nuremberg. Long before that, as students, we had toyed with the idea of self-employment. As a team, we complemented each other very well and together we dared to take the step of founding our own start-up. The good cooperation and the first successes of our small company even brought us first place in the competition! That is why it was clear to us: We want to advance the growable calendar further.