The “simple” version does not have the border of the regular version but works just as well.

In your slicer (PrusaSlicer) you can easily adjust the X, Y and Z dimensions to fit your container and how high you want to raise the plant pot.

No supports, use 4 or 5 perimeters to avoid the chatter of infill.  Layer height of 0.2mm or more - no one is going to see it in the flower pot container.