Help planning garden layout/design (pics)
Hello. First-timer here with lots of questions. I have an irregularly-shaped, terraced flower bed which borders the sidewalk that needs some attention. Bed is 7-8 feet wide and 30 feet long and is on northeast side of house. The area was originally a steep grassy slope and we added a short retaining wall and planted shrubs. Hill below the wall is covered with cotoneaster (which needs to be weeded and pruned). The shrubs on the upper level (near sidewalk) outgrew their space and we removed them last spring. There are two new azeleas near the foundation that I planted yesterday and 1 old barberry that is going to be moved. I want to plant perennials but am not sure how to plan the design. Do I need some kind of tall plants in the back to form a backdrop of some sort (which will be the side that faces the road)? I don't think the area is wide enough to put a row of shrubs as a background. I originally was planning on Coreopsis Moonbeam, Scabiosa Butterfly Blue, and maybe Shasta daisies; but after reading some of the posts here, I'm not sure if they would come back next year. I also considered planting drift roses near top of retaining wall and planting peonies or lilies (pink) if front of the roses but thought they might be too tall. I would like to plant bulbs for spring color and then have perennials for summer. At this point I am feeling overwhelmed but I can't leave this area empty any longer. Thanks for help/suggestions.