Surround the hardscape area with evergreen species instead of deciduous species that seasonally drop their foliage. Consider using evergreens such as spruce or firs that do not drop their leaves, making them less messy.
Landscape the area by situating plants away from the hardscape area. Place plants far enough away that fallen leaves will not drop or blow directly into the area. Consider the plants mature height and spread when selecting an appropriate distance from the hardscape for planting.
Prune any vegetation close to the hardscape regularly. Remove yellowing, dying or diseased branches before the leaves have a chance to die and drop. Pruning regularly keeps the plants looking maintained and removes the problem before it begins.
Erect a fence, wall or other barrier on the vegetation side of the hardscape. Select an item that blends into the landscape, but will block leaves from blowing into the area.
Create a raised berm area around the hardscape. Mound the soil up approximately 4 feet to create a barrier. It will block the fallen leaves from blowing into the area, or keep their intrusion into the area at a minimum.
Install sod around the hardscape area instead of plants. It will give the area a green look, but without the hassle of having to clean up the mess of dropped leaves.
Plant an evergreen groundcover that acts as a barrier keeping the area clean. Consider using an evergreen, ornamental grass such as liriope or mondo grass. It has a dense, clumping habit that will block bowing debris from the area.