Formline Tree Rings
A clean circle where the mower stops.
Formline pre-rolled steel tree rings, 2mm thick and 150mm high, in three diameters — 600mm, 900mm and 1200mm — and in either galvanised or weathering steel. They separate a trunk and its mulch from the lawn around it. Order-in only: allow about one to two weeks, and ring or email with the shape, size and quantity for pricing.
Or call the yard on (08) 9434 2290
Real stock, not a swatch. Blended products vary a little batch to batch, so treat these as a guide rather than an exact colour match.
Tree Rings details
Tree Rings at a glance
- Product type
- Pre-rolled steel tree ring
- Brand
- Formline
- Height
- 150mm
- Diameters
- 600mm, 900mm, 1200mm
- Steel thickness
- 2mm
- Finishes
- Galvanised or weathering steel
What Tree Rings suits
What can you use Tree Rings for?
Trees in a lawn
The main use. A ring gives the mower an edge to work to and keeps the whipper snipper away from the bark, which is what kills young trees.
Holding mulch where it belongs
Mulch around a tree without an edge migrates into the lawn. The ring keeps the bed intact and the mulch doing its job.
Feature planting
Filled with decorative stone or a dark mulch, a ring turns a tree in a lawn into a deliberate feature rather than an obstacle.
Small trees and narrow spaces
The 600mm ring suits smaller trees and tighter garden areas where a wider bed would crowd the space.
Which size ring?
Three diameters, all 150mm high
Formline rings come in three diameters and one height. Choose by the size of the tree and how much mulch bed you want around it — and allow room for the trunk to thicken.
All three are 2mm steel, pre-rolled, and available in galvanised or weathering steel. They are order-in only, so allow one to two weeks.
| Size | Diameter | What it suits |
|---|---|---|
| Compact | 150mm x 600mm | Smaller trees, narrow garden areas, a tighter border. |
| Versatile | 150mm x 900mm | Landscaped lawns and residential gardens. The mid-sized option. |
| Large | 150mm x 1200mm | Established trees, and where you want a real mulch bed. |
Order-in only — allow approximately one to two weeks after your order is confirmed. Ring or email with the shape, measurements and quantity for current pricing.
Why Tree Rings
Why choose Tree Rings?
Pre-rolled, so the circle is a circle
It arrives round. Bending a strip into an even circle on site is harder than it sounds and it shows when it is not quite right.
Two millimetre steel
Substantial enough to hold its shape against a wheelbarrow and a mower, year after year.
Two finishes, one product
Galvanised to disappear, weathering steel to become a rust-coloured feature. Choose by whether you want to see it.
Three diameters
600, 900 and 1200mm. Match the ring to the tree rather than making the tree fit the ring.
Getting Tree Rings home
How to get Tree Rings
Collect from the yard
Open seven days at 222 Barrington St, Bibra Lake. The loader puts it straight into your trailer or ute, and someone will tell you whether what you have brought will carry the load.
Borrow one of our trailers free for two hours to get your load home. No charge, no bond.
Have it delivered
Across Perth's southern suburbs, seven days. For a quote we need the address, how much you need, and anything awkward about access — tight driveways, low branches and side access all change which truck we send. Confirm the current cost when you order.
Formats
- Order-in only — allow 1 to 2 weeks
- Galvanised or weathering steel
- Ring or email for current pricing
Using Tree Rings
How to use Tree Rings
Order ahead
These are an order-in-only product. Allow approximately one to two weeks after your order is confirmed, and ring or email with the shape, measurements and quantity for current pricing.
Size it to the tree, not to today
Trunks thicken and root plates spread. A ring that fits snugly now will be tight in a few years, so go a size up if the tree is young.
Set it level and bed it in
Scribe the circle, take the turf out inside it, and set the ring so its top sits just below the mower's cut. Backfill the outside so the lawn meets it cleanly.
Keep the mulch off the trunk
Fill the ring with mulch but leave a clear gap around the trunk itself. Mulch banked against bark holds moisture against it and rots it.
When to choose something else
When it is the wrong product
- Order-in only. Allow about one to two weeks after the order is confirmed — this is not something to pick up on the day.
- Pricing is on request. Ring or email with the shape, measurements and quantity and we will quote it.
- All three sizes are 150mm high. If you want a deeper bed than that, edging lengths are the more flexible answer.
- Weathering steel is meant to rust. It will stain a light-coloured paver or a concrete edge as it patinas, so think about what it is sitting on.
- A ring is not a root barrier. It defines a bed; it does not stop roots going where roots go.
Customer reviews
What people say
Tree Rings questions
Tree Rings FAQs
Goes with Tree Rings
Other products you may need
Edging by the length
For everything that is not a circle.
What goes inside the ring
Mulch, or decorative stone.
Feeding the tree it goes around
Under the mulch rather than on it.
Guides for tree rings
Planning your project
Tree Rings quote
Need Tree Rings for your project?
Send us the quantity you need, your suburb, and whether you would like to collect it or have it delivered. If you are not sure how much, put your measurements into the calculator above and we will check it for you.
Or ring the yard on (08) 9434 2290
222 Barrington St, Bibra Lake WA 6163 · Open 7 days
Use the calculator above and the amount lands in the message for you.