Posted: 16/05/2017 at 15:55
It's a bit narrow. I would worry about pots meaning you can't snuggle cars up against the wall for safety and also that pots would go walkies.
Maybe you could consider building a heavy timber planter along the wall and in between where the two spaces meet and then fill with compost and plant permanent spring bulbs with changing annuals for spring summer and autumn displays and something evergreen for winter.
It could have a trellis at the back to allow for climbers but they would need to be wind resistant.
Choice of plants depends on your temperature range so where are you? You would also need to be prepared to water your chosen container(s) often - every day in summer and sometimes twice in a hot spell.