The Tool Desk
Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →The best planting for a steep hill is a layered mix chosen for your local climate, slope position, sun, soil, and drainage—not a single groundcover expected to work everywhere. First identify where water flows and which areas stay dry or wet; then combine locally suitable plants with temporary soil protection while roots establish. Planting can help protect the surface, but deep gullies, concentrated runoff, or structural concerns call for site-specific help.
Assess the hill before choosing plants
Start by mapping the slope, not by buying a plant list. Note where roof, driveway, or upslope water enters; where it exits; and where you see bare patches, runnels, or gullies. Record sun and shade, soil texture, and how moisture changes from the top to the foot of the hill. Upper areas often drain quickly, while the bottom can remain wetter.
Slope is the vertical rise divided by the horizontal run. Iowa State University Extension and Outreach offers these practical categories, reviewed March 2026; they are planting guidance, not engineering standards:
- Less than 5%: generally few special slope-planting considerations.
- Around 8–16%: moderately steep.
- 20% or greater: steep.
- Approximately 30% or greater: generally too steep to mow.
- About 50%: often considered the steepest slope that can support plant growth.
These thresholds help describe the site, but they do not establish whether a particular hill is stable or safe to work on.
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#1 Best Overall
- TRANSFORM SLOPES INTO PLANTABLE GARDEN SPACE – Designed specifically for hillsides and sloped landscapes, the Hillside Planter creates a stable, level planting pocket so you can successfully grow flowers, herbs, vegetables, and shrubs where traditional planting fails.
- HELPS CONTROL SOIL EROSION & PROTECT ROOT ZONES – Stabilizes soil on inclines by containing rich planting mix around the root ball. Reduces runoff, minimizes washout, and keeps nutrients where your plants need them most.
- CREATES A LEVEL SURFACE FOR BETTER WATER PENETRATION – Forms a flat planting base on steep grades, allowing sprinkler and drip irrigation systems to distribute water evenly instead of letting it run downhill.
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What plants grow on a steep hill?
Use a mix of locally appropriate grasses, groundcovers, perennials, and woody plants with different heights and root forms. A layered planting covers more of the surface and can help slow raindrops and runoff. Iowa State Extension lists options such as little bluestem, switchgrass, prairie dropseed, creeping phlox, wild ginger, Solomon’s seal, and Christmas fern for different light conditions. Its palette includes non-native plants, so check a candidate’s local invasive status before buying.
Compare options by more than their ability to spread. Colorado State University Extension notes that no single groundcover fits every landscape and recommends vigorous growth and extensive roots for erosion control on steep slopes. Check each plant’s regional fit, mature spread, maintenance needs, and establishment speed. Fast-spreading plants may need containment, and groundcovers still require care and weeding.
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What can I plant on a sunny hillside?
Choose plants for the site’s region and soil as well as its exposure. University of Maryland Extension’s examples are for Maryland conditions, not nationwide prescriptions:
- Butterfly milkweed (Asclepias tuberosa): suited to excellent drainage, but slow to grow.
- Hairy beardtongue (Penstemon hirsutus): suited to hot, rocky, dry sites in Maryland’s Piedmont and Mountain areas; Maryland Extension does not recommend it for the Coastal Plain.
- Gray goldenrod: listed for poor, dry soil.
- Virginia wildrye: described as quick-germinating, deer-resistant, and present through winter.
Use these as examples of how conditions narrow the choices, then verify native range and suitability with an extension service or native-plant source in your area.
Rank #3
- Perfect For Adding Plants/Trees On A Steep Hillside: Measuring 40in wide by 16in high. Each set includes 3 oval-shaped Plastic sheets and 6 ground stakes, allowing you to easily plant flowers, vegetables, or trees on slopes to meet your DIY landscaping and gardening needs.
- They Work Well To Keep Soil And Water In: Designed specifically for sloped terrain and garden slopes, it stabilizes the slope to prevent landslides and helps maintain the integrity of the soil in planting areas, making it an ideal choice for gardening enthusiasts.
- Works Well In Heavy Rain And Snow: Made from thick, weather-resistant PE material, this retaining wall will not rust, deform or crack. It can be reused after cleaning, making it ideal for outdoor use in soil and eliminating the need for frequent replacement.
- Easy To Bend, No Tools Needed: We provide metal ground stakes for securing the product. Simply insert it into the soil and secure it in place by inserting the stake into the reserved slot along the edges. Our hillside planter make it easy to transform your yard.
- Fantastic Product For Hillside Planting: Are you struggling to grow plants on large slopes? Use our hillside planter to transform those empty slopes into vibrant garden landscapes. Say goodbye to soil loss and erosion, and create flower beds on the slopes of your backyard.
What grows on a shady slope under trees?
For shaded Maryland slopes, University of Maryland Extension offers examples matched to different moisture conditions:
- White wood aster (Eurybia divaricata): spreads by rhizomes in mesic-to-dry soil.
- Christmas fern (Polystichum acrostichoides): suited to moist, well-drained through dry conditions.
- Golden groundsel: suited to wet or moist soil, such as the foot of a slope.
- Wild hydrangea: naturally grows on steep slopes and cliffs.
On wooded slopes, limit digging around tree roots. Maryland Extension recommends small plugs or quart-sized plants rather than large plants for this reason.
Rank #4
- Perfect For Adding Plants/Trees On A Steep Hillside: Measuring 40in wide by 16in high. Each set includes 6 oval-shaped Plastic sheets and 12 ground stakes, allowing you to easily plant flowers, vegetables, or trees on slopes to meet your DIY landscaping and gardening needs.
- They Work Well To Keep Soil And Water In: Designed specifically for sloped terrain and garden slopes, it stabilizes the slope to prevent landslides and helps maintain the integrity of the soil in planting areas, making it an ideal choice for gardening enthusiasts.
- Works Well In Heavy Rain And Snow: Made from thick, weather-resistant PE material, this retaining wall will not rust, deform or crack. It can be reused after cleaning, making it ideal for outdoor use in soil and eliminating the need for frequent replacement.
- Easy To Bend, No Tools Needed: We provide metal ground stakes for securing the product. Simply insert it into the soil and secure it in place by inserting the stake into the reserved slot along the edges. Our hillside planter make it easy to transform your yard.
- Fantastic Product For Hillside Planting: Are you struggling to grow plants on large slopes? Use our hillside planter to transform those empty slopes into vibrant garden landscapes. Say goodbye to soil loss and erosion, and create flower beds on the slopes of your backyard.
How do I stop soil washing down a hill?
Deal with concentrated water first
Trace runoff from roofs, paving, and higher ground before planting. Iowa State Extension describes redirecting excess surface water at the top of a slope and planting along contour lines to slow flow. Mississippi State Extension advises retaining or creating drainage channels where water naturally concentrates. As Robert F. Brzuszek, Assistant Extension Professor in Landscape Architecture at Mississippi State, puts it: “Water naturally follows the lowest and easiest course, so it is best to retain or even create permanent drainage channels on steep slopes.”
Do not expect plants alone to absorb damaging, concentrated flows. If water is eroding a channel or crossing the slope with force, get local advice on drainage before disturbing the area.
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- MULTIPURPOSE BURLAP ROLL – This 40 x 6.6 ft roll of natural jute burlap is a versatile all-around fabric for gardening, landscaping, DIY projects, and rustic event decor. One large roll, endless uses around the home, yard, and garden.
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Keep the ground covered while plants establish
Preserve existing vegetation and roots where feasible. Arrange new plants in staggered groups or contour-following rows rather than leaving exposed strips running downhill. On bare areas, a temporary erosion-control blanket, mat, or wattle can protect the surface while plants take root; it is not a fix for severe drainage or slope-stability problems.
Iowa State Extension recommends installing a blanket promptly after planting and pinning it tightly against the soil. A loose blanket can lift as plants germinate. Jute and coir are biodegradable blanket materials. Follow the product’s installation directions and use a suitable material for the site.
How should I water and maintain a planted slope?
- Water at low volume. Drip irrigation, soaker hoses, or another low-volume system can reduce runoff compared with applying water rapidly over the surface.
- Pause if water runs downhill. If watering starts moving soil or flowing across the surface, stop and let the water soak in before resuming.
- Weed during establishment. New plants need time to fill in, and weeds can compete with them. Groundcovers are not automatically maintenance-free.
- Watch for changing erosion. Check after heavy rain for new runnels, gullies, or exposed soil, and adjust drainage or protection if the flow pattern changes.
When should I get site-specific help?
Ask a qualified local professional to assess deep or expanding gullies, persistent concentrated flows, or concerns about slope stability. Retaining walls involve more than choosing a height or material: Mississippi State Extension notes that large walls require proper equipment, expertise, and drainage, and advises checking local ordinances and building codes. Requirements vary by location, so do not treat general planting guidance as a design for drainage work or a retaining structure.
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