If you love to garden but don’t have the tiniest fraction of an acre to your name, all hope is not lost. These fifteen urban oases prove that a gorgeous garden can thrive in the smallest — and unlikeliest — of spaces… TOP ROW: 1. Ferns and herbs abound on the back porch of Elizabeth’s Color-Filled Apartment in Chicago. 2. Lilacs, basil, mums, and 42 other types of plants thrive on Alejandro’s Rooftop Oasis. 3.