When choosing topsoil for your garden or landscaping project, understanding the difference between screened topsoil and unscreened topsoil can have a significant impact on the outcome. Both types of soil are used for different applications, so it is important to know which one suits your needs.
Key takeaways
- Screened topsoil is sifted to remove large debris and contaminants, resulting in a finer, more uniform product.
- Unscreened topsoil is raw and unprocessed, with larger pieces such as stones, roots, and clumps.
- Choosing the right type of topsoil helps support healthy plant growth, easier application, and long-term success in landscaping.
Why screened topsoil matters
Topsoil is the upper layer of soil, rich in organic matter, and essential for healthy plant growth. However, not all topsoil is the same.
Screened topsoil has gone through a sifting process that removes larger particles such as rocks, roots, and other debris. This creates a finer, looser soil that is easier to work with, more consistent in texture, and cleaner overall.
Screened topsoil is especially useful for projects that need a smooth, even base or where plants are sensitive to debris and large clumps. It also supports better drainage, making it a strong choice for gardens, flower beds, lawns, and landscaping projects where roots need room to spread.
What is unscreened topsoil?
Unscreened topsoil is the raw form of topsoil taken directly from the ground.
It has not been sifted or processed, which means it can contain larger pieces such as:
- stones
- twigs
- roots
- larger lumps of soil
While unscreened topsoil is often cheaper than screened topsoil, it is not always the best option for every project. It is usually heavier and harder to work with, and the larger pieces of organic matter can affect drainage, consistency, and overall soil structure.
Unscreened topsoil is often used for rough grading, bulk fill, or projects where the soil will be improved further with compost or other amendments.
Why you should choose screened topsoil
Improved texture and uniformity
Screened topsoil is smooth and easy to spread, with no large clumps or debris. This makes it ideal for lawn preparation and gardening, where a consistent soil structure is important.
Better drainage
Because it is sifted, screened topsoil usually allows water to move through more easily, helping prevent waterlogging and allowing roots to breathe properly.
Healthier plant growth
With fewer large particles and less debris, the soil is generally better aerated. This gives roots better access to oxygen, water, and nutrients, helping plants establish more easily.
Easier application
Screened topsoil is much easier to handle than unscreened soil. It is simpler to spread and usually needs less effort to level out, making installation quicker and cleaner.
When should you use unscreened topsoil?
Unscreened topsoil is most useful when a fine texture is not essential and the soil will be mixed, improved, or used as a base layer.
Typical uses include:
Bulk fill and levelling
If you are filling in low areas or levelling land before laying a lawn or creating a planting area, unscreened topsoil can work well as a base material.
Landscaping with soil amendments
If you plan to mix in compost or other organic matter, unscreened topsoil can be a cost-effective starting point.
Less visible areas
For areas where appearance is not a major concern, such as construction grading or hidden fill areas, unscreened topsoil can be a practical option.
When to choose screened topsoil
Screened topsoil is usually the better choice for projects where surface finish, plant health, and ease of use are important.
Landscaping
For a smooth, even surface for flowers, vegetables, or lawn grass, screened topsoil is usually the better choice.
Garden beds
If you are creating a garden bed, especially for flowers or plants with delicate roots, screened topsoil provides a cleaner and more consistent growing base.
Lawns
The texture of screened topsoil makes it a strong option for new lawns, helping support even grass growth and more consistent moisture retention.
Flower beds and vegetable patches
Screened topsoil allows roots to spread more freely, which can improve both plant health and growing results.
How to choose the right topsoil for your project
1. Project type
For lawns and garden areas, screened topsoil is usually the better option because of its finer texture, easier handling, and more consistent quality.
For bulk fill or rough grading, unscreened topsoil may be more suitable, particularly if it will be improved later.
2. Budget considerations
Screened topsoil tends to cost more because of the extra processing involved.
If you are working with a tighter budget, unscreened topsoil may be a more affordable option for larger areas where finish is less important.
That said, screened topsoil can save time and reduce the need for extra work later, which may make it better value overall.
3. Soil condition
Screened topsoil is ideal when you want clean, fertile soil ready for planting.
If your site already has decent soil and simply needs additional bulk material, unscreened topsoil may be enough.
How to use screened and unscreened topsoil
Preparing the ground
Whichever type of topsoil you choose, preparing the ground properly is an important first step.
Before applying topsoil, the surface should be:
- cleared of debris
- levelled
- free from weeds and large roots
For better long-term results, you may also want to use a weed suppressant membrane where appropriate.
Spreading topsoil
Once the area is prepared, spread the topsoil evenly using a shovel, rake, or wheelbarrow.
For more precise work, a levelling bar or garden rake can help create a smoother finish.
Conclusion
Choosing between screened topsoil and unscreened topsoil depends on your project, your budget, and the finish you want to achieve.
Screened topsoil is usually the best option for gardening, landscaping, and lawns because it offers better consistency, easier handling, and a cleaner growing medium.
Unscreened topsoil is more suited to bulk fill, rough grading, or situations where the soil will be mixed with other materials.
By understanding the difference between the two, you can choose the right product for your project and give it the best chance of success.
FAQs
Can unscreened topsoil be used for gardens?
Unscreened topsoil can be used for gardens, but it usually contains more debris and uneven material. It is generally better suited to fill work unless it is processed further.
How thick should I lay topsoil?
For planting areas such as garden beds, a layer of around 75–100 mm of screened topsoil is commonly recommended. For lawns, around 50 mm is often used.
Is it possible to screen my own topsoil?
Yes, you can screen your own topsoil using a garden sifter or mesh screen, but it can be time-consuming. Buying pre-screened topsoil is usually quicker and gives a more consistent result.