For New Yorkers, “outdoor space” is a term used loosely. It can mean anything from a fire escape to a front stoop to a subterranean back alley, like ours. And it takes a certain amount of fortitude to cultivate these unlikely spaces, as was recently detailed by this article in the New York Times. After three years of attempting to garden in his communal back yard in Crown Heights, my friend, Joshua Kristal, moved his garden to his rooftop this year. A photographer by trade, he has been documenting his (particularly urban) challenges and successes on his blog, Machupicchuthis. Proving that patience pays off, this year he is harvesting everything from tomatoes, to eggplants, to cape gooseberries and has had to come up with ingenious ways to make sure the crops are watered and protected from pests. If you are thinking about growing food on your rooftop, this post will inspire you. The photos alone will make you hungry.