need suggestions for utility screen
Hello, I'm soliciting suggestions for a plant or plants that would work well to hide our group of utility posts. We have four of them together (gas, electric, telephone, and cable) that range in height with the max being about four feet. I've tried various things here and haven't been happy with anything I've done. I first tried esperanza but they die back for too much of the year and leave it bare. So then I had an idea of making it into a rose planting and put in some beautiful double delights but they never really got full enough to cover up the utilities. Lots of people in our neighborhood use various kinds of hedges (yaupon holly, privet, texas sage, etc) which does the trick but I would really like something that flowers and is more eye-catching. Besides I don't prefer the sculptured look; I'm much more of a cottage gardener and I can imagine all kinds of colors and textures growing close together, but I'm coming up short thinking of something that is tall, full, evergreen, and flowers for a long time. That is, except knockout roses and oleander, which I already have. So I'm calling on the wisdom of the group--what suggestions do you have that I'm not thinking about.
ps. I'm just northeast of Austin.