Because of its porous surface, grass is difficult to grow on bricks. Like all plants, grass requires moisture, but bricks actually pull the moisture out of soil. Furthermore, when seeds are planted beneath a brick, there's no place for the roots to grow, says Paul Schnare, a Master Gardener who tested a grass blend. Therefore, bricks are a less-than-ideal growth environment.
According to a review on the Home Improvements Depot, EZ Seed is one such grass-like product that will grow on bricks and any other surface. The product is a combination of several grass seeds including, Fenway creeping red fescue, Wendy Jean creeping red fescue, Silver Dollar perennial ryegrass, Courtyard Kentucky Bluegrass, Thermal Blue Kentucky Bluegrass and Majesty II perennial ryegrass. Collectively, the seeds account for approximately seven percent of the mixture. The remainder is fertilizer and soil substitute.
Other than occasional watering, the grass blends require very little care. In an experiment on the EZ Seed conducted by the Home Improvements Depot, the grass fared well -- even after several days without water -- remaining thick and lush.
For green growth on bricks, gardeners should opt for plants that provide a lush green look and actually thrive in the environment. Ivies are popular choices. There are a number of species within the ivy family; Hedera helix "English Ivy" is a perennial vine that produces a dark green vine and Parthenocissus tricuspidata "Boston ivy" is a rapidly climbing perennial vine that thrives under most any conditions.