RAIN GARDEN SOIL MIX IN BULK BAGS
The Rain Garden Soil Mix is a specially engineered blend designed for use in bioretention areas, rain gardens, and sustainable drainage systems (SuDS). This mix supports both effective stormwater management and healthy plant growth by providing excellent infiltration rates, pollutant filtration, and moisture regulation. Ideal for landscape architects and civil engineers designing for resilience and sustainability, this soil mix plays a vital role in mitigating urban runoff and enhancing biodiversity. Technical datasheet
Read More£75
(Excl. VAT £15)
-
A rain garden is a shallow, landscaped depression designed to manage and treat stormwater runoff from hard surfaces such as roofs, roads, and pavements. The system captures, temporarily stores, and filters rainwater through a specially engineered soil mix and vegetation before it infiltrates into the ground or slowly drains away.
- Designed to absorb and filter stormwater quickly, reducing surface runoff and flood risk.
- Filters pollutants, sediments, and nutrients from stormwater before it reaches the water table or sewer system.
- Maintains a balanced structure and nutrient profile to support robust vegetation in variable moisture conditions.
- Engineered to stay stable under saturated conditions, preventing soil washout and collapse.
- Manufactured to meet SuDS specifications and environmental guidelines using responsibly sourced materials.
This substrate blend is currently undergoing independent laboratory analysis by STRI (Sports Turf Research Institute) to validate physical, chemical, and biological performance. Full test reports will be made available upon completion and can be provided to clients on request.
Moisture retentiveGrowing Medium
LightweightUK Green Roof Code of Best Practise
-
Physical Properties Bulk Density When Oven Dried 1.20 – 1.35 g/cm³ Physical Properties Bulk Density at field capacity 1.35 – 1.50 g/cm³ Physical Properties Field capacity (% v/v) 30 – 35% Physical Properties Total porosity (%) 45 – 55% Physical Properties Porosity at field capacity (%) 10 – 15% Technical Properties Organic matter (% weight) 3 – 5% Technical Properties Electrical Conductivity (mS cm-1) 6.5 – 7.5 Technical Properties pH <1.0 mS/cm Technical Properties Phosphate (mgl-1) <20 mg/L Technical Properties Potassium (mg l-1) 100 – 200 mg/L Technical Properties Total nitrogen (%) 0.5 – 0.8%
