Best Edging for Around Trees: 10 Tree Rings and Borders Compared by Material and Size

Every time a string trimmer gets too close to a young trunk, it can strip bark that the tree needs to move water and food. Finding the best edging for around trees is the simplest fix, because a clear ring keeps mowers, trimmers and grass at a safe distance.

This guide compares 10 options across four product types: pre-formed steel tree rings, flat rubber mulch mats, plastic watering rings and flexible edging you can bend into a circle. We look at diameter, height, material and how each one goes into the ground, so you can match the ring to your tree size, your soil and how much digging you want to do.

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On this page

1. Compare Tree Edging by Material, Size, Height and Install
2. Detailed Reviews: Best Edging for Around Trees
3. Size the Tree Ring for the Tree, Not the Trunk
4. Do Not Dig Deep Trenches Through Tree Roots
5. How to Choose Edging for Around Trees
6. Which Edging for Around Trees Should You Choose?
7. Frequently Asked Questions
8. Final Verdict

Compare Tree Edging by Material, Size, Height and Install

Detailed Reviews: Best Edging for Around Trees

1. EdgeRight Circular Tree Ring Edging Kit, COR-TEN Steel (Best Overall Tree Ring)

• 2.5 ftDiameter
• 6 inHeight
• 16 gaugeSteel thickness
• COR-TENMaterial

Best for: Homeowners who want a permanent, clean circle around a young or medium tree in a mowed lawn

Why it ranks #1: It is the only pick that combines a fixed steel circle with a full 6 in of height, which gives it more root and grass blocking depth than the Core Edge ring at number 4.

The EdgeRight kit is a ready-made circle of COR-TEN steel with a 2.5 ft diameter and a 6 in height. The listing gives the thickness as 16 gauge. Because the ring is already shaped, you skip the fiddly job of bending a straight strip into a round line, and the seller says it will not bend, move or collapse with wind and weather.

The listing describes the ring as a barrier against rhizomes and roots that crowd a tree, which is the main reason to choose 6 in over a shallow strip. It also says the steel does not rust but ages to a patina. COR-TEN steel does form a thin rust colored surface layer, so expect a brown finish rather than bare metal.

Skip it if you want a ring you can mow right over at turf level; the Core Edge 600mm Steel Ring is built to sit low in the lawn.

2. Rocky Mountain Goods 24-Inch Tree Mulch Ring Weed Preventer, Pack of 4 (Best No-Dig Mulch Ring)

• 24 inDiameter
• 4Rings per pack
• Recycled rubberMaterial
• 0Staples needed

Best for: Gardeners with several young trees who want weed control around each trunk without any digging

Why it ranks #2: It beats the Peryiter mats at number 6 on ease, since the listing calls it mower safe and staple free, but it does not frame the area as clearly as the steel rings above it.

This pack gives you four 24 in tree rings made from recycled heavy duty rubber. You lay each one flat around the trunk, and the listing says no landscape staples are needed. The seller compares it with lightweight coco rings and says it will not get caught in a mower, which matters if you mow right up to the tree.

The ring uses a porous design that the listing says gives equal water seepage to the roots, so rain and hose water still reach the soil. The textured, natural color is meant to look like mulch. It works as a weed barrier rather than a raised border, so it will not hold loose bark in place on a slope.

Skip it if you want a raised border that stops grass creeping in from the side; the EdgeRight Cor-Ten Tree Ring stands 6 in tall.

3. WaterRounds 24-Inch Tree Planting Rings, 6-Pack (Best for Deep Watering)

• 24 inDiameter
• Up to 5 galWater held
• 6Rings per pack
• 100% recycled PPMaterial

Best for: Anyone planting new trees who needs to water deeply during the first seasons

Why it ranks #3: No other pick doubles as a watering basin, which puts it above the rubber mats for new plantings, though it is less permanent than steel.

WaterRounds rings are a different idea from plain edging. Each 24 in ring holds up to 5 gal of water, according to the listing, and lets it soak down slowly so less runs off the surface. The seller rates the 24 in size for small to medium trees, with smaller 20 in and 16 in versions for shrubs, roses and vegetables.

To install, you loosen the soil, place the ring around the tree and twist it into the ground. The listing says it also keeps mulch, rock and bark contained and shields trunks from mowers and trimmers. It is made in the USA from 100% recycled, UV resistant polypropylene, and the pack includes six rings.

Skip it if your tree is already large and established; the Beuta Polyrock 4 ft Ring gives you a 4 ft ring.

4. CORE Landscape Products Core Edge Garden Tree Ring, 600mm, CORE-Ten Steel (Best Mow-Over Steel Ring)

• 600mmDiameter
• 1.6mmSteel thickness
• 2Sections
• 3Sizes offered

Best for: Lawn owners who want a crisp steel line they can mow straight over

Why it ranks #4: It sits just below the EdgeRight ring because the listing gives no height, but its mow-over design and size options beat every plastic border.

The Core Edge ring comes as two pre-rolled sections that bolt together into a 600mm circle. The listing says it uses 1.6mm steel, the same as the brand’s regular edging, and comes in 600mm, 900mm and 1200mm sizes and four colors. This version is the CORE-Ten weathering finish.

Teeth along the bottom anchor the ring in the ground. The seller says the ring sits low enough in the turf that you can mow over the top, which gives you a smooth lawn edge without trimming. The listing also mentions water retention, so the ring can help hold water near the trunk.

Skip it if you want tall root blocking; the EdgeRight Cor-Ten Tree Ring lists a 6 in height.

5. Beuta Polyrock Landscape Edging for Tree Rings, 4 ft Diameter, Sandstone (Best Faux Stone Look)

• 4 ftRing diameter
• 6.5 inHeight
• 48 inSection length
• 18Bricks total

Best for: Front yards where you want the look of stone around a larger tree without lifting real stone

Why it ranks #5: It is the largest ring on this list and the tallest at 6.5 in, but resin blocks are a style choice more than a protective barrier, so it ranks below the steel rings.

Beuta’s kit has three modular sections, each with six faux stone bricks, that join into a ring with a 4 ft diameter. Each section measures 48 in long, 3.5 in wide and 6.5 in high. The weather resistant resin is meant to resist cracking and fading, and it saves you the weight of real stone.

The kit comes with a weed guard, 10 staples and 6 pins. You can also arrange the sections in curves or straight runs if you change your layout later. The sandstone color suits warm toned mulch and brick paths, while the raised blocks give mowers a clear line to stop at.

Skip it if you want a low, mowable edge; the Core Edge 600mm Steel Ring sits down in the turf.

6. Peryiter 6 Pcs Rubber Mulch Tree Ring Protector Mat, 24 in (Best Value Multi-Pack Mats)

• 24 inDiameter
• 0.59 inThickness
• 3 inCenter opening
• 6Rings per pack

Best for: Orchards, rental yards or long rows of trees where you need many rings at once

Why it ranks #6: It gives you more rings and a listed thickness, but the Rocky Mountain mats at number 2 add a mower safe claim, which keeps this one a step behind.

Peryiter’s pack includes six 24 in rubber tree rings, each 0.59 in thick. The center opening is 3 in, and you can cut it larger to fit your trunk. Pre-cut seams let you slip the mat around a tree that is already planted, and no landscape staples are needed.

The listing says the thick rubber adds weight that helps the mat stay put, and the textured, permeable surface lets rain and irrigation reach the roots. The seller suggests measuring the trunk and the area you want to cover before ordering. Like any flat mat, it controls weeds but does not create a raised edge.

Skip it if you only have one or two trees and want a sturdier frame; the EdgeRight Cor-Ten Tree Ring is a single steel ring.

7. WORTH Garden 33 ft Metal Landscape Edging, 10-Pack 40 in x 4.5 in, Black Galvanized Steel (Best for Custom Ring Sizes)

• 33 ftTotal length
• 4.5 inHeight
• 2 inAbove ground
• 11Clips included

Best for: Yards with several trees of different sizes or one large tree that needs a wide ring

Why it ranks #7: It is the strongest choice when no ready-made ring fits, though bending strips into a clean circle takes more work than the pre-formed rings above it.

WORTH sells this edging as ten 40 in strips of powder coated galvanized steel, giving you 33 ft once installed. Each strip is 4.5 in tall, with 2 in showing above ground and 2.5 in saw teeth going into the soil. Eleven 7 in clamps join the strips, and gloves are included.

Because the steel bends by hand, you can form one large ring or several small ones around different trees. A 33 ft run can circle a ring about 10 ft across, or several smaller rings. The listing says you can pull it up and reshape it later. Wear gloves, since the teeth are sharp, and hammer gently to avoid bending the top edge.

Skip it if you want a ring that is round straight from the box; the EdgeRight Cor-Ten Tree Ring comes pre-formed.

8. Dimex EasyFlex No-Dig Landscape Edging Kit, 100 ft, Black (Best Long Coil for Many Trees)

• 100 ftCoil length
• 1.5 inHeight
• 32Anchoring spikes
• Recycled plasticMaterial

Best for: Budget minded gardeners edging lots of trees or linking tree rings into a larger bed

Why it ranks #8: It covers the most ground on the list, but a 1.5 in height and plastic build make it a lighter barrier than the steel strips at number 7.

The EasyFlex kit from Dimex includes a single 100 ft coil of 1.5 in tall edging and 32 anchoring spikes. It is made from flexible recycled plastic, and the listing says it bends into curves and straight runs and works in all soil types. You set it on the soil surface and drive the spikes through it, so there is no trench to dig.

That no-dig design is kind to shallow tree roots, since you are not cutting a trench through them. The low 1.5 in profile is easy to mow beside. The trade off is that grass runners can slip under or over a short plastic edge more easily than a taller steel one.

Skip it if aggressive grass keeps creeping into your tree bed; the EdgeRight Cor-Ten Tree Ring gives you 6 in of steel.

9. WORTH Wooden Edging for Landscaping, 8 in x 42 in, Burnt Wood Finish (Best Rustic Wood Border)

• 7.9 inHeight
• 42 inLength
• Metal coreConnector
• Burnt woodFinish

Best for: Cottage style gardens where a low wooden fence around the tree suits the look

Why it ranks #9: It brings a warm look the metal and rubber picks cannot, but wood is a seasonal material, so it ranks below the longer lasting options.

This WORTH border is a short wooden fence with a burnt wood finish. It measures 7.9 in high and 42 in long, and a flexible metal core lets it bend into curves or a circle around a tree. You push the pointed stakes into the ground, so it is another no-dig option.

The listing says the wood and reinforced core are built for seasonal weather. A single 42 in length will only wrap a small trunk, so measure the circle you want and plan on several pieces for a wider ring. The fence style also gives children and pets a visual cue to keep off a young tree.

Skip it if you want a border that will last many years with no upkeep; the WORTH 33 ft Steel Edging is galvanized steel.

10. WONALOM 20-Pack Faux Stone Garden Edging Border, Gray Plastic (Best Lightweight Panels)

• 20Panels
• 16 ftTotal length
• 9.65 x 3.94 x 9.06 inPanel size
• 0.13 lbPanel weight

Best for: Renters or anyone wanting a quick, light stone-look ring they can move later

Why it ranks #10: It is the easiest decorative border to place and move, but at 0.13 lb per panel it is the lightest and least protective option here.

WONALOM’s set includes 20 gray plastic panels, each about 9.65 x 3.94 x 9.06 in and 0.13 lb. Linked together, they cover up to 16 ft, which is enough to circle a ring about 5 ft across. Each panel has a built-in stake, so you press it into softened soil with no trench or concrete.

Side locks join the panels in a neat line, and the listing says they handle soft curves and small corners. The raised stone texture gives a decorative look around mulch and tree rings. Since the panels are so light, firm the soil well after placing them so a mower or foot does not knock them loose.

Skip it if you want a stone look with more weight and height; the Beuta Polyrock 4 ft Ring uses 6.5 in resin blocks.

Size the Tree Ring for the Tree, Not the Trunk

The most common mistake with edging around trees is a ring that hugs the trunk. A tiny circle keeps the trimmer off the bark, but it leaves almost no room for mulch or water.

A good rule of thumb is a ring at least 2 ft across for a newly planted tree, and wider as the canopy grows. The 24 in Rocky Mountain 24 in Ring, WaterRounds 24 in Rings and Peryiter 24 in Rubber Mats suit young trees, while the 2.5 ft EdgeRight Cor-Ten Tree Ring gives a little more space. For an older tree, the 4 ft Beuta Polyrock 4 ft Ring or a custom circle made from the 33 ft WORTH 33 ft Steel Edging makes more sense.

Keep mulch 2 to 3 in thick inside the ring and pull it a few inches back from the trunk itself. Mulch piled against the bark holds moisture and can invite rot and pests.

Do Not Dig Deep Trenches Through Tree Roots

Most of a tree’s feeder roots sit in the top foot of soil. Cutting a deep trench for edging can slice through them and stress the tree.

That is why no-dig styles are popular for edging around trees. The EasyFlex 100 ft No-Dig Kit lies on the surface and pins down with spikes, the WONALOM Faux Stone Panels and WORTH Burnt Wood Edging press in with stakes, and the Rocky Mountain 24 in Ring and Peryiter 24 in Rubber Mats simply lie flat. The steel rings go in shallow, too: the WORTH 33 ft Steel Edging has 2.5 in teeth, and the Core Edge 600mm Steel Ring anchors with teeth along its base.

As a rule of thumb, keep any digging within the top 3 in near an established tree. If you hit a root thicker than your thumb, move the edge out rather than cutting it. When hammering steel edging, wear gloves and eye protection, and follow the manufacturer instructions.

How to Choose Edging for Around Trees

Material

Steel is the longest lasting choice. The EdgeRight Cor-Ten Tree Ring and Core Edge 600mm Steel Ring are weathering steel rings, and the WORTH 33 ft Steel Edging is galvanized steel strip. Rubber mats such as the Rocky Mountain 24 in Ring trade height for weed control, plastic like the EasyFlex 100 ft No-Dig Kit is cheap and flexible, and resin or wood picks like the Beuta Polyrock 4 ft Ring and WORTH Burnt Wood Edging focus on looks.

Diameter

Ring sizes on this list run from 24 in mats up to the 4 ft Beuta Polyrock 4 ft Ring. Pick 2 ft for new trees and 4 ft or more for mature ones. Flexible strips let you set any size.

Height

Taller edging blocks grass runners better. Heights range from 1.5 in on the EasyFlex 100 ft No-Dig Kit to 6 in on the EdgeRight Cor-Ten Tree Ring and 6.5 in on the Beuta Polyrock 4 ft Ring. Go tall if your lawn spreads by runners; go low if you want to mow over the edge.

Install Method

Pre-formed rings are quickest to get round. Flat mats need no tools at all. Strips and panels take longer but adapt to any tree or slope.

Watering

For new plantings, a basin like the WaterRounds 24 in Rings, which holds up to 5 gal, helps water soak down instead of running off.

Which Edging for Around Trees Should You Choose?

• If you want one permanent ring with real root blocking, choose the EdgeRight Cor-Ten Tree Ring, because it is 6 in tall COR-TEN steel.
• If you want weed control with no digging, choose the Rocky Mountain 24 in Ring, because it lies flat and needs no staples.
• If you are planting new trees, choose the WaterRounds 24 in Rings, because each ring holds up to 5 gal of water.
• If you want to mow straight over the edge, choose the Core Edge 600mm Steel Ring, because it sits low in the turf.
• If you want a stone look around a big tree, choose the Beuta Polyrock 4 ft Ring, because it forms a 4 ft ring.
• If you have many trees to cover, choose the Peryiter 24 in Rubber Mats, because you get six 0.59 in thick mats.
• If you need a custom ring size, choose the WORTH 33 ft Steel Edging, because its 33 ft of steel bends to any shape.
• If you are linking several trees into one bed, choose the EasyFlex 100 ft No-Dig Kit, because it comes as a 100 ft coil.
• If you like a rustic garden style, choose the WORTH Burnt Wood Edging, because it has a burnt wood finish.
• If you want a light border you can move later, choose the WONALOM Faux Stone Panels, because each panel weighs 0.13 lb.

Frequently Asked Questions

What is the best edging to put around a tree?

For most lawns, a pre-formed steel ring is the best edging for around trees, because it holds its shape and blocks grass. The EdgeRight Cor-Ten Tree Ring stands 6 in tall. If you want no digging at all, a flat rubber mulch ring like the Rocky Mountain 24 in Ring is the simplest option.

Rubber mulch ring vs steel tree ring: which is better?

A steel ring gives you a raised, permanent edge that holds mulch and stops grass runners. A rubber mulch ring lies flat, controls weeds and needs no tools. Choose steel such as the Core Edge 600mm Steel Ring for a crisp lawn line, and rubber such as the Peryiter 24 in Rubber Mats for quick weed control around many trees.

How to install edging around a tree without damaging roots?

Use a no-dig product or keep digging shallow. Clear the grass, set the edging on loosened soil, then pin or stake it. Products like the EasyFlex 100 ft No-Dig Kit and WONALOM Faux Stone Panels need no trench. If you hit a root thicker than your thumb, move the edging out instead of cutting the root.

How big should a tree ring be?

Aim for at least 2 ft across for a young tree, and wider as the tree grows. Rings on this list run from 24 in mats to the 4 ft Beuta Polyrock 4 ft Ring. For larger trees, bend flexible steel like the WORTH 33 ft Steel Edging into a custom circle.

Is it safe to mow over tree ring edging?

Only some styles are made for it. The listing for the Core Edge 600mm Steel Ring says it sits low enough to mow over, and the Rocky Mountain 24 in Ring is described as mower safe. Raised blocks and fence styles need trimming along the outside, so keep blades clear and follow your mower manual.

Should mulch touch the tree trunk inside the ring?

No. Keep mulch a few inches away from the bark and about 2 to 3 in deep across the rest of the ring. Mulch piled against the trunk holds moisture and can lead to rot and pests.

Final Verdict

The EdgeRight Cor-Ten Tree Ring is our pick for the best edging for around trees. Its 6 in height and 2.5 ft COR-TEN steel circle give you a lasting edge that keeps trimmers back and blocks spreading grass and rhizomes.

If you would rather skip tools entirely, the Rocky Mountain 24 in Ring lies flat and needs no staples. Before you buy, measure your trunk and the area under the young canopy so the ring is large enough to hold mulch and water.

See the EdgeRight Cor-Ten Tree Ring on Amazon