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CORE case study · Worcestershire

Precise show-garden levels at RHS Malvern 2025

CORE DATUM EDGE formed the adjustable borders for The Hierarchy of Plants, winner of the 2025 People’s Choice Best Show Garden and a Silver-Gilt Medal.

Client
Kate Mason Garden Designs
Sector
Show garden & landscape design
Location
Worcestershire
Completion
RHS Malvern Spring Festival 2025
CORE components
CORE DATUM EDGE
Completed RHS Malvern 2025 show garden designed by Kate Mason.
CORE project · Worcestershire
012025

RHS Malvern Spring Festival

02People’s Choice

Best Show Garden

03Silver-Gilt

RHS medal

04CORE DATUM EDGE

Adjustable steel edging

Project context

A landscape shaped by its purpose.

Garden designer Kate Mason presented The Hierarchy of Plants at RHS Malvern Spring Festival 2025. The installation combined detailed planting, constructed paths and precisely controlled landscape borders.

A show build brings a compressed programme and changing on-site conditions. The edging needed to establish consistent levels on uneven ground, follow bespoke geometry and remain suitable for removal after the event.

The brief

What the project had to achieve.

Establish accurate lines and levels across uneven show ground within a short installation window, while allowing on-site design adjustments and later dismantling.

  1. 01

    Short programme

    The border system needed to be installed and adjusted within a tightly controlled show-garden build.

  2. 02

    Uneven ground

    Accurate finished levels had to be established without extensive preparatory groundworks.

  3. 03

    Bespoke geometry

    The steel profiles needed to respond to the garden’s detailed path and planting layout.

  4. 04

    Temporary installation

    Components needed to be robust enough for dismantling and potential reuse after the show.

CORE DATUM EDGE defining the RHS Malvern show-garden border.
Completed interface · adjustable steel edge
The CORE solution

Selected around the site—not just the surface.

CORE DATUM EDGE steel sections were adjusted, shaped and joined to create continuous borders around the bespoke planting and path layout.

CORE DATUM EDGE used its rear joining and DatumLock adjustment to establish a controlled top line across the show plot.

The steel sections were flexed and aligned to the bespoke layout, creating clean continuous borders between planting and hard-landscape elements.

After the show, the Corten sections were repurposed for a new setting, extending their life beyond the temporary installation.

Products & quantities

Products used.

Installation

How the system was installed.

  1. 01

    Show-garden ground prepared to the project layout

  2. 02

    CORE DATUM EDGE sections shaped and levelled to the design

  3. 03

    Rear joining plates, pins and DatumLock adjustment

  4. 04

    Adjoining paths, planting and landscape finishes completed to the controlled edge

The result

The completed garden received the People’s Choice Best Show Garden award and a Silver-Gilt Medal at RHS Malvern Spring Festival 2025.

Project outcomes

  • Accurate, continuous borders across uneven show ground
  • On-site adjustment around bespoke planting and path geometry
  • A robust removable edge suited to a temporary installation
  • People’s Choice Best Show Garden and a Silver-Gilt Medal
Project team

The people behind the project.

Designer
Kate Mason
Design practice
Kate Mason Garden Designs
Event
RHS Malvern Spring Festival 2025
Project gallery

Progress and completed work.

The completed Hierarchy of Plants show garden at RHS Malvern 2025.
The Hierarchy of PlantsCORE project archivecompleted
Detailed planting and path within the RHS Malvern show garden.
Completed planting and path interfacesCORE project archivecompleted
CORE DATUM EDGE defining a planted border at RHS Malvern.
CORE DATUM EDGE at the planted interfaceCORE project archivecompleted
Technical downloads

Project and product documents.

Sources

Project sources.

  1. RHS Malvern 2025 CORE DATUM EDGE case studyCORE Civil Systems
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