This is how I originally designed the Poppy, and I'm bringing it back! It uses the same mounts as all my other wall mounted planters.
Supports None needed!
Scaling I wouldn't recommend scaling this one since it perfectly fits the command strips and the screw holes are designed specifically for #10-12 x 1-1/4 in anchors and screws.
Orientation The planter and tray should have their bottoms on the build plate. All mounts should have the sliding dovetail facing up.
Print Settings .2mm layer height 15% grid infill. I've been using gyroid for the 4.5" command mount and it's much cleaner. 2 walls
Filament & Hardware Filament I used for this print: Polymaker Matte Marble PLA Hardware: #10-12 x 1-1/4 in screws
Filament and hardware/non 3D printed items for this model can be found on my Amazon Storefront, linked here: https://hendricks.design/links/