what to plant ??????

Am new to this forum!
Any suggestions as to what to plant where have removed a a yukka.

Is at the front of the house in a circular area and will have buxus hedge around it. Needs to grow outwards rather than upwards as at the front of the house. To flower Spring and Summer preferably blues or reds required and not be bare in Winter. Any suggestions would be appreciated. Thanks. Lisa

 

How about Ceanothus - blue flowers in late Spring and evergreen? Does grow tall, but can be clipped/pruned to keep in shape after flowering.

 

oooh yes, they are pretty! :-) Or a viburnum? Flowers in spring, then has pretty berries on it in autumn?