I built this for my sister-in-law who loves growing vegetables and herb - in her small apartment porch. She wanted something that she can put her plant pots (and she has so many of them!), so I modified the Painter's Ladder Shelf by:
1. Made the shelves with slats, with added support underneath
2. Beefed up the legs with 2X3s instead of 1X2s.
Dad helped with angled cuts and other things, and borrowing his workshop, this was a breeze to build.