[Xist]

I saw some self-watering designs, but the most-common thing I noticed was gutters at an angle, particularly with more angled gutters underneath, forming a zigzag.

They say the standard length is 10', but that wall is 9'3", and sooner or later I will buy a third white cabinet and put it in that corner.

I was thinking that I could use command strips to attach a 2'x4' board to the wall and mount 5' sections of gutters to the right corners, with the top one sloping 6" down, and the bottom one sloping 6" up, with a drain hole in the lowest point in each.

I thought I would put a narrow length of pipe to ensure the water drains from the top section to the bottom one, and attach a removable bottle to the very bottom. With gravel along the bottom hopefully I could just water the top corner and it would spread throughout, but a long watering can would be far less complicated.