Replay’s store on Passeig de Gràcia in Barcelona now hosts a vertical garden of just above 100m2. In the storefront location, the two storey wall is set in a dramatic and playful environment with waterfalls, sculptures and contrasting materials. As a great place to study nature’s own vertical gardens, the waterfalls were a natural starting point for the plant design. Looking closer to the environment around a waterfall, growing conditions change with linear patterns of fissures and cracks in the underlying exposed rock, or the rapidly decreasing moisture already small steps away from the immediate vicinity of the falling water.