This bowl can be printed in spiral vase mode or spiralize outer contour in cura. Or, uncheck spiralize outer contour, set top layers to 0. Set infill to 0%. Bottom layers set to 3 or more. Set walls to 2 or more for a more sturdy bowl. Can be scaled to fit your needs. The photo shows bowl not scaled at 100%. The x and y axis is 135mm wide and z is 80mm tall. It has not been tested for being watertight. If you use it as a planter be sure and test for water/soil compatibility. If you make it, please post a photo, I'd like to see your print! Enjoy...

Notes below....