When mowing is no longer an option.
Frankly, I’ve not had to mow a grassy slope since I left East Tennessee three dozen years ago. But a homeowner’s recent question got me to thinking about it again. I remember well the difficulty of pushing a lawnmower up and chasing it down, or maneuvering it across an embankment. An older neighbor used to tie a rope to the handle of his mower, then let it down and pull it up the grade repeatedly to get the job done. Neither method was ideal.
Lawn grass is popular because it covers quickly, and usually controls erosion effectively. But mowing it is the problem. There might be better ways to landscape a slope. However, a few problems would need to be solved: erosion (drainage and hillside stabilization), plant selection, and usage (function). To quote the architect, Louis Sullivan, “form ever follows function.” Here are a few.
Build a retaining wall
Retaining walls serve two purposes: to control erosion, and to modify the grade. After constructing the wall, the up-slope area is back-filled to level-out the grade (more or less), so all purposes are achieved.
Build terraces
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Each level of your terraces may provide several areas for herb and flower gardens, shrub beds, wall plantings, and even seating areas. The terraces can be interconnected with a series of steps for easy access.
If your site is not too steep, you might elect to dispense with the terrace walls, but plant rows of deep-rooted shrubs and ground covers to hold the terraces in place.
Provide drainage

Plant the hillside
If you don’t intend to use it for any other purpose, you can simply plant the hillside with deep-rooted species. A combination could include shrubs, herbs, ground cover perennials, vines and grasses. Drought-tolerant species such as junipers, lantana, echinacea, yarrow, ivies, liriope, vinca and creeping phlox would be good selections for the dryer, upper areas of the slope. Moisture-loving species such as daylilies, rudbeckia, liriope (again) and Rubus should be planted nearer the middle and bottom. If water tends to stand in some of the lower areas, bog-type plants such as Siberian iris, sedges and Japanese Sweet Flag would be appropriate. Perhaps there are plants native to your area that would do the trick.When the problems of drainage (erosion and hillside stabilization) and plant selection have been solved, your maintenance problems should be very much reduced.
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