Ordering Multiple Metres?

Click Add to Cart and you can easily adjust your exact total quantity/metres in the cart pop-up.


ADD TO CART

TRADE ONLY EverEdge Cor-Ten Pre-Formed Tree Rings

Architectural Cor-Ten weathering steel tree rings engineered for a lifetime of zero-maintenance performance around trees and circular garden features.


Delivered in a clean silver steel state, Cor-Ten naturally forms a dense, protective rust patina within 5 weeks outdoors that shields the underlying metal from structural degradation. Engineered to take the weight of ride-on mowers while giving tree pits a crisp, high-end landscape finish.


Key Benefits:


  • Architectural Patina: Develops a rich, natural rust finish that complements native planting and modern landscaping.
  • Ride-On Mower Safe: Sinks flush into turf so mowers ride straight over without catching blades or damaging the tree.
  • Bolted Security: Heavy-duty coach bolts hold sections firmly together so the ring never shifts or separates.


NZ$82.80

Circle Diameter & Depth Profile

  • Specifications

    • 2 Metre Circle: 600mm diameter x 175mm total height (100mm border & 75mm spike)
    • 3 Metre Circle: 900mm diameter x 200mm total height (125mm border & 75mm spike)
    • Material: Genuine Cor-Ten structural weathering steel (1.6mm thickness)
    • Ground Spikes: Integrated 95mm ground spikes along each arc
    • Fixings: Heavy-duty coach bolts included for each intersection

  • How To Use

    Made to order — tree rings can take up to 5 working days to ship.


    1. Assemble Above Ground: Bolt the pre-curved Cor-Ten sections together into a full circle using the supplied coach bolts.
    2. Position & Tap Down: Set the assembled ring around your tree base and tap level with grass roots using a rubber mallet over a wood block.
    3. Natural Weathering: Leave untreated outdoors. The steel will transition from raw silver to a rich, warm rust patina within 3 to 5 weeks.


  • New Zealand Shipping & Pickup Information

    We deliver EverEdge products directly to homes, job sites, and commercial projects right across New Zealand, or you can pick them up locally from our Christchurch depot.


    Tracked Freight Nationwide

    • Flat-Rate Shipping Tiers: Freight is calculated automatically at checkout based on your order subtotal:
    • Orders under $200: $35.00 flat rate
    • Orders $200 to $999.99: $55.00 flat rate
    • Orders $1,000 and over: FREE Freight
    • Tracked Delivery: All orders are dispatched via tracked courier or freight services. You will receive a tracking link via email as soon as your order leaves our warehouse.
    • Lead Times: Pre-formed Cor-Ten tree rings are made to order and dispatch within 3 to 5 working days.


    Free Christchurch Depot Pickup

    • Avoid Freight Costs: Select the Click & Collect option at checkout to collect your order directly from our Christchurch depot for free.
    • Collection Process: Depot pickups are available once your "Ready for Collection" notification email has been issued. Full depot address details and collection instructions will be provided in your confirmation email.



Rusty metal ring with downward-pointing spikes, like a medieval torture device or fire pit guard

Effortless Installation, Built For Lifetime Lawn Borders

See How Easily EverEdge Locks Together

Installing clean, professional garden borders and tree surrounds shouldn't require a team of contractors or hours of back-breaking digging. EverEdge products are pre-engineered to install smoothly, lock firmly together, and sink flush into your lawn line.

Why New Zealand Landscapers Choose EverEdge

100% Mower Safe

Sinks level with your grass root line so you can mow straight over the edge without strimming or catching blades.

Built-In Locking System

Every piece features integrated tongue-and-slot joiners for seamless, continuous borders that won't separate over time.

Galvanised & Powder-Coated

Made from 1.6mm gauge mild steel that won't rot, warp, or crack under intense UV or frost conditions.

Christchurch Depot Available

Order online for direct tracked freight nationwide, or select free Click & Collect from our Christchurch depot.

Frequently Asked Questions About Garden Edging NZ

  • Can I drive a lawnmower straight over EverEdge?

    Yes. When installed correctly with the top of the edging flush with the soil line at the grass roots, lawnmowers can ride directly over the edge without damaging the steel or your mower blades.

  • How do Pre-Formed Tree Rings join together compared to straight edging?

    While straight EverEdge lengths connect using a built-in tongue-and-slot interlocking system, Pre-Formed Tree Rings arrive pre-curved into arcs and join together securely at each intersection using included heavy-duty coach bolts. Both systems drive deep into the ground using integrated 95mm spikes.

  • Do I need special tools to bend EverEdge into shape?

    Not at all. EverEdge is designed to be bent by hand against a timber block or soft ground to create smooth curves or sharp right angles.

  • How deep do the integrated spikes go into the soil?

    Each 1-metre length includes six 95mm ground spikes that drive deep into the soil to keep the edging permanently anchored without shifting over time.

  • Can I collect my order in person?

    Absolutely. Select the Click & Collect option at checkout to collect your order directly from our Christchurch depot once your fulfillment confirmation email arrives.

Complete Your Garden Project

Explore Popular EverEdge Alternatives And Tree Surrounds