Plant creeping phlox on sunny slopes for erosion control with a pop of spring color. A carpet of pink, purple, red, or white flowers each spring makes creeping phlox (Phlox subulata) one of the showiest plants for erosion control.
Steep, sunny slopes are perfect for perennials such as daylilies, creeping phlox, lamb’s ears, stonecrop and a variety of ornamental grasses. A number of woody plants can also serve as good groundcovers, especially creeping juniper, fragrant sumac, bearberry, and Russian arborvitae.
Mulch. Mulch is a good choice if your slope is less than 33 percent, and the right mulch can help to keep soil in place on a gentle slope with or without plants. Use at least 3 inches of mulch that resists washing or blowing away during a rainfall or high winds.
A. Yes, gardens can work on slopes, as long as the slope is not so steep that the soil will wash downhill, and you are comfortable working on the surface. Plants, with roots that anchor the soil and leaves that soften the impact of raindrops, help control erosion.
Most hillsides can be made relatively stable with plants . The planting should be a mix of groundcover, shrubs, trees, and perennials with the areas between plants covered with mulch or boulders. A mix of plants and vegetation layers ensure that when it rains, the force of the water hitting the ground is deflected.
Techniques for steep slopes include wood retaining walls, interlocking concrete blocks, rock retaining walls, riprap (loose rock) areas, and terracing. If you choose wood, make sure the wood is treated with a wood preservative to prevent rotting.
Slopes can be stabilized by adding a surface cover to the slope, excavating and changing (or regrading) the slope geometry, adding support structures to reinforce the slope or using drainage to control the groundwater in slope material.
Spread the soil, starting at the lowest point where it is needed. Dump wheelbarrow loads in a line across the slope, building up the lowest area to the approximate height desired. Continue dumping loads of soil to create a roughly level area on the slope.
Shredded bark is one of the best mulch types to use on slopes and it breaks down relatively slowly.
Sunflowers also need a soil that drains well, so planting them on a slope will often help keep their roots from becoming too waterlogged. Another advantage of planting sunflowers on a slope is that picking the right plants can help reduce soil erosion and minimize flooding in other parts of your yard.
4. Another great way to address a slope is adding a grove of trees. Planting large evergreens like Leyland Cypress, Arborvitae, Magnolias or Pine trees can provide screening and low maintenance. Deciduous trees like Yoshino Cherries, Red Buds and Crape Myrtles are some low growing trees that are also good options.
Firs and Pines. Evergreens are great for hilly and sloping portions of your landscape. These hardy trees hold the soil well, so they can prevent the erosion that might otherwise have taken place. A Douglas fir is always a great choice for hills and sloping areas of your yard.
Using moss as lawn provides wonderful springy groundcover that can be walked on moderately — a no-mow alternative with rich, deep color and texture. It just might be a good choice for your lawn needs.
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