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What is topsoil?

Topsoil refers to the top layer of soil that is high in organic matter and nutrients, formed by the slow weathering of rocks and decaying organic matter over thousands of years. It is typically used for making raised beds, new beds, borders and bases for new lawns where the natural insitu soil is of a poor quality or is not available, such as a courtyard.

Unfortunately many gardens have poor quality soil resulting from the soil becoming contaminated or stripped away during construction processes, especially prevalent in new builds. This means that it is often necessary to utilise quality topsoils to balance out the nutrient content for a project.

Topsoil typically comes available in three grades: economy, general-purpose and premium, based on the amount of organic matter and nutrients within the soil. Topsoil is widely available to purchase in small and bulk bags for varied projects. All good quality topsoil including Boughton’s range of certified topsoils should meet British Standards 3882:2007

Economy grade topsoil: commonly known as ‘as dug’ topsoil typically used for large projects and industrial/commercial uses. The cheaper price is mirrored in the quality of the soil, although still generally high in nutrients as a topsoil, no screening has taken place and weed seeds will likely be present. Commonly used for volume purchasing.

  • pH = 5.0-8.2
  • Phosphorus (P) Index min = N/A
  • Potassium (K) Index min = N/A
  • Magnesium (Mg) Index min = N/A

 

General-purpose topsoil: widely available in different screen size grades and multi-useful for laying beds and providing a base to sow a lawn. With varying grades, a coarser topsoil is fantastic for turf laying while finer grades will be useful for dressing a lawn.

  • pH = 5.0-8.2
  • Phosphorus (P) Index min = 2
  • Potassium (K) Index min = 2
  • Magnesium (Mg) Index min = 1

 

Premium grade topsoil: The more expensive option that carries the least risk of harbouring weed seeds. A good quality loamy soil will be high in fertility and provide a good structure for building beds and supporting plant growth.

  • pH = 5.5-7.8
  • Phosphorus (P) Index min = 2
  • Potassium (K) Index min = 2
  • Magnesium (Mg) Index min = 1

 

We have a full range of topsoils available to purchase from our online shop, delivered anywhere in the UK.

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