Rectangular Pot with Integrated Tray - all you need to do is plant your flower inside.
12 different sizes. Smallest 80x100 to 120x180.
Square versions (60x60, 80x80, 100x100, etc… ) available here :
https://www.printables.com/model/637714-square-pot-with-integrated-tray
Material used in photo : Dark Marble - PLA - 0.3 layer
Made on Prusa Mini