In order to get some suggestions, let us know if it is a shady or sunny location.

Thanks, this is an area that gets Sun for a good portion of the day.

Blueberries, which come in several heights depending on the variety. Will give you mostly inconsequential blooms in the spring; berries early to mid to late summer[again depending on the variety]; most have very colorful foliage for fall. Will feed the birds if you don't net the bushes. Pruning is minimal (and they are forgiving if you do it wrong). Front/intersperse with low-growing berries such as bearberry or lingon. Plant bulbs such as daffodils and lilies for fairly carefree color. Mulch with something like pinestraw or pine nuggets to minimize care.