Locals know it, of course: today, Fettehenne is part of a district of Leverkusen. The unusual name does not refer to poultry, but to a plant species that is popularly called "Fettehenne". This succulent plant requires particularly fertile soil to thrive. Where it occurs frequently, good farmland can be expected. As the name tells us, this was the case in Fettehenne. That's why there were so many farms here.