How to Keep Mulch on a Slope/Hillside? 7 Ways

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If you reside in hilly regions, it’s pretty aggravating to spread mulch on a slope to stabilize it for planting, only to discover that the mulch won’t stay there. Mulch with a loose texture might be thoroughly washed away by heavy rain or blown away by gravity and wind.

Sometimes, wet mulch flows in a mass, similar to a carpet on a slippery floor, posing a more considerable mudslide danger than an untreated slope. The migration rate relies on the slope’s steepness, the amount of water that runs down it during rainfall, and the kind of mulch used. However, you can try out some best ways that are explained below and really answer your query “how to keep mulch from washing away”.

How to Keep Mulch From Washing Away on a Slope/Hillside? How to Keep Mulch in Place?

Here are the 7 ways explained below that will keep your mulch in place or prevent your mulch from washing away on the slope/hillside.

1. Making Use of Terraces

When gardening on a slope, terraces will almost always be essential. Some slopes will be so steep that planting a garden without terraced parts would be impossible.

If used appropriately, a terrace may also aid in the retention of Mulch. If you’re working with a steep slope, consider utilizing a terrace design for your garden.

This may be the best option for dealing with a modest slope. Terraces will help you avoid the challenges that come with slopes and will make it much easier to keep everything where it needs to be.

Eagle view of terraces

2. Digging a Trench

It could be a good idea to dig a trench to collect the Mulch if it falls. Even if you do everything correctly and utilize a terrace, Mulch might still be blown away by the wind.

By digging a trench, you can be confident that any mulch from your beds will fall into it and remain there.

It will be simple to remove the Mulch from the trench and place it where it belongs. Going through this trench plan is good if you live in a region with a steep slope. It’ll save you from wasting too much Mulch if things don’t go according to plan.

Digging a Trench

3. Use Suitable Mulch for Slopes 

Specific varieties of Mulch aren’t up to the task when it comes to keeping in place. When you want to keep things in place, thicker Mulch can be a better option.

When you’re attempting to get things to operate on a slope, the added weight of something like hefty wood chips or wood nuggets will be great.

The best mulch to use on a slope is Shredded Bark. You may use shredded bark, a sort of Mulch well-known for its ability to function well in sloping regions. Shredded bark works well because it prevents the bark fragments from becoming twisted and allows them to remain in one place.
Shredded Bark Mulch
Shredded Bark Mulch

You may also utilize straw mulch. Straw mulch is utilized on slopes to prevent failures, less than 2:1. It lasts around three months, generally, enough time for permanent, stabilizing vegetation to grow.

Straw is readily blown away due to its small weight. Tackifiers, often known as “crimping,” may assist in alleviating this issue.

4. Never Use Plastic Lining As A Mulch Base

It may assist with weeds and other concerns, many people prefer to utilize plastic liner beneath Mulch. It will, however, make it more difficult for your Mulch to remain in place.

If you utilize plastic below the Mulch, you’ll probably lose more Mulch than average. Instead of employing plastic lining barriers, some individuals have started using many layers of Mulch. You may put down a layer of Mulch and moisten it before adding another layer.

If you’re experiencing problems with mulch loss, get rid of plastic liner barriers as soon as possible. If you take the time to make this adjustment, you’ll notice that the Mulch will remain on the slope much better.

5. Use Netting 

Netting is a great option when dealing with a steep slope. You may buy netting to trap the Mulch and prevent it from falling down the slope.

Landscape netting creates expressly to assist individuals in dealing with this issue. The net will fix to the ground and unable to move. It’s crucial to note that this isn’t always required for folks who have to cope with minor slopes.

The disadvantage is that the netting may not be aesthetically pleasing to you. Installing nets may limit your ability to observe your plants as well as you would want, which is a pity when you consider it.

Netting  on slope

6. Mulch on the Slope With Several Inches on the Slope

After you’ve completed planting in the preparing the garden on the slope, the question comes in mind “how to put mulch on a slope”. To do so, spread a 2- to 6-inch (5- to 15-cm) layer of Mulch over the garden bed with a shovel or rake. 

7. Dig a well around the plants’ base

Pull the Mulch away from the base of the plants using your hand or a shovel after you’ve spread it out in the garden bed. This is particularly useful on slopes where the plants protect from mould, decay, and insects.

Here is short video about keeping mulch on “how to put mulch on a slope”:

Image Product Name Distinguishing Feature Check
Worx WG743 40V 4.0Ah 16-Inch Cordless Mulching Lawn Mower
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Greenworks 48V 20-inch Brushless Cordless Push Lawn Mower
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Sun Joe 17-Inch Walk-Behind Cordless Electric Mulching Mower
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Greenworks 20-Inch Cordless 3-In-1 Mower with Smart Cut Technology
Greenworks 20-Inch Cordless 3-In-1 Mower with Smart Cut Technology
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Frequently Asked Questions

How to keep mulch in place without edging?

As explained above, the best way to keep mulch on slope without using edging is to make use of terraces, trench, wells and netting. Netting is by far the best way to keep mulch in place without using any edging. Terraces comes on second when you are planning to keep mulch in place without using edging. All methods to keep mulch in place without edging are explained above.

How to keep bark mulch on a slope?

To keep bark mulch on a slope, you can make your area clear and make terraces on it. After this dig some trench if you have to. Then spread the bark mulch (2 inch depth). After this you can use netting to keep mulch in place on slope.

How to sheet mulch on a slope?

To sheet mulch on a slope, remove all the weeds and extra plants roots. Then put sheet mulch on the slope like it fits to the ground. Now make holes in the sheet where you want your desired plants to be grown.

How to mulch around trees on a slope?

Mulching around tree is very easy if they are on slope. You can use mulches like bark mulch or straw mulch for best purpose. Later, after laying mulch around tree, you have to make use of netting to hold mulch in place around the trees.

How to keep bark mulch on a slope?

You can install landscaping netting to stop the bark mulch from sliding down a slope. Landscaping netting has been designed specifically for this reason. Use landscaping pins to secure it into place and be sure to avoid using wire or other types of metal that could rust or otherwise not remain strong over time.

How to keep mulch on a steep slope?

Netting is the best choice to keep mulch on a steep slope as it holds mulch particles in place efficiently.

What type of mulch is best for slopes?

A good choice for mulch on a slope is shredded bark. It’s easy to apply, breaks down fairly slowly over time, and is one of the cheapest types of mulch on the market.

Conclusion: “How to Hold Mulch on a Slope/Hillside”

When it comes to “How to Hold Mulch on a Slope”. Use terraces; dig a trench, use suitable mulch for slopes (straw mulch is best), and Mulch on the slope by several inches. Never use plastic lining as a Mulch base and netting are the best ways to keep Mulch on a slope.

Want to learn more about mulch?

We have written articles about various types of mulch, like cypress mulch, cedar mulch, eucalyptus mulch, hemlock mulch, gorilla hair mulch or pine bark mulch. Check it out!

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After doing my master’s in agriculture, I went on with this field for more than 15 years because I love working in green. I have experienced using modern machinery and techniques that can help farmers and landscapers to achieve something great. My goal will be to deliver you the best reviews and information to make the right decision.

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