Slopes and grades in the landscape can create a challenge for the backyard landscape and homeowner. Grades in the landscape can create a beautiful finished backyard design but need proper planning.
As a general rule of thumb grades of over 5 percent are too steep for comfort or for best appearance. They are difficult to mow and often have problems with grass and rutting. I know from personal experience.
Where there are differences in grade on a small lot you should put in steps and a terraced slope. Or a retaining wall could connect the two levels. With a retaining wall you need to plan for the wall to be sturdy. And check for any construction regulations in your area before starting the project.
The most comfortable steps for a garden path have a 5-inch rise and a 14-inch tread. A 6-inch rise and a 12-inch tread will also work. Anything steeper can be uncomfortable, particularly if it has a rough surface. It’s also wise to include a handrail with any stairs. You do not know who may use the steps and what weather conditions may be, so offer your guests the security of a handrail.
Terraced slopes seem to work best if you use a rise of 1 foot in a 3-foot area, particularly if a power mower is to be used. If the banks are too steep to make grass cutting easy, it is much better to plant them with ground covers. My front yard has such a slope and it has one terraced area near the top were I planted shrubs and perennials and added a set of stairs. The lower section has ground cover with perennial groupings and decorative rocks.
Note: Ground covers add instant beauty to a yard. They can help prevent erosion and cut back on mowing difficult areas. And these perennials come in a wide variety of color, texture and season flowering. But, as with all plants, they can have drawbacks and with ground covers you have to check for invasive spreading. Read the rowing tags and instructions well and ask at the garden center when you buy the plants.
You may also want to consider using heavy mulch or crushed decorative rock in certain areas of a slope. In my area I can find free pine needles and wood chips for free. They add a rich base to a slope to build on.
The main concern when landscaping a graded yard is to simplify yard work, prevent any runoff flooding and to make the area safe for family and friends.
If properly planned a yard with a steep grade can be turned into a beautiful garden area that can be enjoyed. Many slopes have incorporated gardens, plants and a place to relax in the design making it a useful addition to the home and garden area.



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