Second RGB's questions....
It looks like you have a western exposure on the planting bed. Guessing from the shadows the front of the bed gets more sun than the back of the bed. So I'm estimating from about Noon to sunset in the front and maybe only from 3pm to sunset in the back half????
So I'm thinking something tall and green in the back with some nice flowering stuff towards the front. But can give some thought once we get the specifics.
In addition to the questions RBG asked, maybe you could update your profile with your Zone and State location to help in future posts.
Looking forward to hearing more from you.