Summer Raine Oaks lives in NYC, where you have to think outside the box with your space if you want as much flora as a backyard garden.
Instead of climbing the walls, why not have plants climbing the walls?
Kari and Edwin from Mingo Designs create in this video a most wonderful indoor vertical garden - equipped with sub-irrigation system and 15 different species of plants - from philodendrons to sword ferns.
There is no run off, no need to have a drain.
Very inspiring, and you can almost smell how fresh the inside air is!