Cities are packed with millions of people, and civil engineers have long-solved the problem of housing for such a dense population — build up, not out. Save ground space by creating taller structures, with higher capacities. If you are one of these teeming millions and you happen to have some interest in gardening, you know how difficult it can be to garden in the cramped conditions that urban life demands.
Take a hint from the engineers who designed your living space — build up, not out, and save ground space. On a small patio, balcony, or rooftop you can increase your harvest exponentially by using containers, trellises, arbors, and innovative growing techniques to maximize the space you have.
There are plenty of new plant varieties that lend themselves to small areas: climbing plants and dwarf varieties of popular fruit trees and flowering shrubs. I found a few people online who are benefiting from the new vertical gardening trend that is becoming a necessary adaptation for urban gardeners.