Tree Rings · Rolled to diameter
Tree Rings
3mm and 6mm BlueScope steel, rolled to a true circle — not bolted up from straight segments. Every ring opens so it goes around a tree that's already in the ground. Corten rusts to a deep orange-brown and holds; galvanised stays silver, and both are priced the same.
- Dispatched from Somersby, NSW
- Free metro delivery over $1,000
What size do I need?
Measure the trunk at chest height and allow room for the next ten years. Between two sizes? Go up — the tree will use it.
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770mm Citrus, ornamental pears, anything planted in the last few yearsfrom $129
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960mm Established natives, magnolias, a jacaranda that's found its feetfrom $161Most popular
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1520mm Mature trees, or a ring you want to underplant · two halvesfrom $258
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1910mm Big established gums and figs, driveways, commercial jobs · two halvesfrom $322
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Any size Send the trunk measurement and we'll roll it — see belowAsk us
Every ring comes in a choice of heights as well — 80mm to 600mm. Taller rings hold more soil and mulch.
For most gardens — 3mm
Plenty of steel for a garden bed or a lawn. This is what nearly everyone buys.
Heavy duty — 6mm
Twice the steel. Driveways, carparks, stock yards — anywhere a heavy wheel is going to find it.
Before you buy anything rusty
There's no clever way to make 1.6mm last.
Weathering steel earns its reputation above the ground, where it wets and dries and seals itself into that deep orange-brown. Below the soil it's quieter about it, so what's buried lasts on the strength of how much steel was there to start with. At 3mm and 6mm that's a non-issue — there's more material down there than the job will ever ask for. At 1.6mm the margin is gone, and no amount of clever marketing puts it back.
Core Earth tree rings
3mm or 6mm BlueScope steel
Self-locating brackets welded inside
Stainless bolts supplied
Rolled to a true circle in Somersby, NSW
Flat-rate delivery, stated up front
The 1.6mm alternative
1.6mm — roughly half the steel
Drilled and screwed together on site
Bring your own drill and knee pads
Steel origin often not stated
Freight quoted per order
Two questions settle it. What's the thickness, and does it arrive ready to bolt? We've been rolling these in Somersby since 2020. What's turned up since tends to be 1.6mm, with a bag of screws and instructions to drill it together on your knees. If a listing won't state the gauge, that's your answer.
Two bolts and you're done
Watch one go in.
Real time, no cuts. The brackets find each other, the bolts go in by hand, and the drill never leaves the shed.
- No drilling. The brackets are welded in at our end.
- Stainless bolts supplied. Nothing to source, nothing to match.
- One person, a few minutes. Two of you if it's a 1910.
Filmed at the factory in Somersby. Nothing sped up.
Why ours look different
A true circle. Not bolted up from straight bits.
Plenty of tree rings are a ring in name only — six or eight straight segments flanged together, and you can count the corners from the kitchen window. Ours go through the rolls, so the curve is continuous the whole way round.
Up to 960mm the ring is rolled from one piece and split once, so it opens around a tree that's already in the ground. 1520mm and 1910mm come as two halves — six metres of steel in a single hoop isn't something you'd want on a truck, let alone carry down the side of the house. Either way the brackets are welded inside: a couple of stainless bolts and you're finished. Nothing to drill.
Straight off the factory floor
Custom rings we've made
Any diameter, any height. Send us the trunk measurement and what you're trying to do, and we'll roll it.
