BLRG Rain Garden Soil - Urban Drainage System (SuDs) Soil

Boughton BLRG Rain Garden Soil is based on an extensive green roof substrate, with a small amount of topsoil blended into the mixture to slow down filtration and provide more body. This will retain water for a longer period of time within the soil mixture, increasing its water storage performance, and improving water quality benefits.

Features and benefits:

• Provides a free draining mixture with a large amount of porosity.
• Slows down filtration and provides body.
• Capable of supporting plants which prefer a freer draining substance, but one that is sometimes saturated.
• Soil layer should be between 100–200 mm depth and consist of 10 mm pea gravel.
• Boughton BLRG SuDs soil meets and exceeds all present G.R.O guidelines.

Soil components:

• Green waste compost (PAS100): 20%.
• Crushed brick: 70%.
• Topsoil: 10%.

Heavy metal limits for soil mixtures:

• Lead: 330 mg/L-1.
• Nickle: 22 mg/L-1.
• Copper: 55 mg/L-1.
• Cadmium: 22 mg/L-1.
• Zinc: 88 mg/L-1.