BLS 40 Boughton Screened – Natural Topsoil, Single Source

Composed of re-purposed, single source, screened natural topsoil, usually of sandy clay loam classification with added PAS 100 compost, 40% by volume. BLS 40 is a natural topsoil with boosted organic matter content, has excellent moisture and nutrient retention capabilities.

It is a premium soil best suited to specific planting projects such has raised and ground level vegetable gardens, fruit production both soft and hard. BLS 40 should installed at depths no greater than 350–400 mm; greater depths should be built up with Boughton Loam's subsoil products.

BLS 40 is well suited to projects where permanent irrigation is not specified because of its good water retention properties, although with vegetable and fruit product the manufacturer would always recommend some form of regular irrigation.

For lawns please refer to the manufacturer's BLS 2 topsoil which has a lower organic matter and therefore creates a more stable tilth for lawns. Boughton Loam can provide additional advice if needed on how best to specific and install this topsoil.

Features and benefits:

• Particle size distribution:
• Clay (<0.002 mm): 30%.
• Silt (0.002–0.063 mm): 30%.
• Sand (0.063–2.0 mm): 40%.
• Texture class (UK classification): CL.
• Stones (2–20 mm): 14%.
• Stones (20–50 mm): 0%.
• Stones (>50 mm): 0%.
• Chemical:
• pH value (1:2.5 water extract): 7.3.
• Electrical conductivity (1:2.5 water extract): 174 uS/cm.
• Electrical conductivity (1:2 CaSO4 extract): 2049 uS/cm.
• Exchangeable sodium percentage: 0.6%.
• Organic matter (LOI): 6.4%.
• Total nitrogen (Dumas): 0.24%.
• C:N ratio: 16.
• Extractable phosphorus: 10 mg/L.
• Extractable potassium: 53 mg/L.
• Extractable magnesium: 81 mg/L.