Rolawn SuDS & Rain Garden Soil

£134.99£112.49 incl. VATexcl. VAT

A free-draining soil engineered for rain gardens and SuDS systems. Helps manage surface water, reduce flooding and support healthy plant growth while enhancing biodiversity.

Product Features

Balances infiltration, retention and filtration for effective water management
Supports plant growth and creates habitats for biodiversity
Helps reduce pressure on drainage systems and minimise flooding risk
Independently tested for 70+ parameters for safety and reliability
Improves water quality through natural biofiltration
Peat free, responsibly sourced and fully traceable within the UK

Product Description

Take control of water in your garden

Heavy rainfall can overwhelm traditional soils, leading to standing water, runoff and pressure on drainage systems. This SuDS and rain garden soil is designed to solve that problem at source.

It allows water to move through the soil profile efficiently, reducing surface pooling while still holding enough moisture to support planting. The result is a garden that copes better with both heavy rain and dry periods.

Built for sustainable drainage systems

This is not a standard topsoil. It is an engineered growing medium designed specifically for rain gardens and bioretention systems, where managing water flow is critical.

The soil structure balances three key functions

  • Infiltration to let water drain through
  • Retention to hold moisture for plants
  • Filtration to improve water quality

Together, these functions help reduce urban flooding risk and protect downstream drainage infrastructure.

Cleaner water, healthier ecosystems

As water passes through the soil, contaminants are filtered out through natural biofiltration processes. This improves water quality while supporting plant health and soil life.

The result is a system that does more than manage water. It actively contributes to a healthier garden ecosystem, creating habitats for insects and supporting biodiversity in both domestic and urban spaces.

Designed for reliability on site

Consistency matters, especially for contractors and larger schemes. This soil is independently tested against more than 70 parameters to ensure contaminants remain within safe limits.

It is peat free and responsibly sourced in the UK, with full traceability of materials, making it suitable for environmentally conscious projects and specifications.

Additional Information

Installation and maintenance

  • Can be used as a standalone growing medium or as part of a layered SuDS design
  • Ensure appropriate planting selection for free-draining, slightly alkaline soils
  • Additional irrigation may be required during dry periods to support planting schemes

Applications

  • Rain gardens in domestic landscapes
  • Bioretention systems and SuDS schemes
  • New build developments and sustainable drainage design
  • Public realm and commercial landscaping
  • General landscaping where free drainage is required

Specification

  • Bag size: approximately 500 litres (0.5 m³)
  • Coverage:
    • 2.5m² at 200 mm depth
    • 10m² at 50 mm depth
  • Soil type: free-draining engineered SuDS soil
  • Typical sand content: 88%
  • Saturated hydraulic conductivity: 156 mm/hr
  • pH: approximately 8.4

Frequently Asked Questions