The Difference Between Fill Dirt and Topsoil (2024)

The Difference Between Fill Dirt and Topsoil (1)Should you use dirt or topsoil for your project? Although we don’t often think about uses of dirt it’s important to decide what’s best for your purpose. You may think of dirt in relation to farmers who grow our crops, or dirt that’s used to construct buildings and roads. There are different reasons to use dirt vs topsoil and it’s essential that you are using the correct type for your project.

Different Types of Dirt

Dirt is not just dirt, the type of dirt you choose for your project actually does matter. The reason top soil is sold separately from fill dirt is they provide totally different functions and uses. You probably wouldn’t think of using top soil to build your home, nor would you select fill dirt to grow your vegetables in your garden. Each project requires different results from different types of dirt. If you don’t research what type of fill dirt or topsoil is required for your project, your end result may be disappointing. This may mean spending additional time and money to revise your finished job.

What is Fill Dirt?

Fill dirt consists of a mixture of broken down rocks, sand and clay. It contains little fertility for plants to grow, or any organic matter. There are still many reasons you would want to select fill dirt for your project. Topsoil contains organic matter and is likely to shift or settle over time. If you are looking for filler then fill dirt will provide a more stable material.

Shopping For Fill Dirt

When shopping for fill dirt, check for a company that offers clean fill dirt and meets local standards and regulations. Look to be sure there are no large chunks of dirt or debris that can hinder the dirt’s function. Most fill dirt is cleaned to be sure no toxins, chemicals or other byproducts are present.

What is Topsoil?

Topsoil is very different from fill dirt. It consists of healthy nutrients taken from the top layer of soil and contains organic matter. We typically use topsoil to grow our plants and vegetables in our gardens and pots. Talk to your distributor about the correct topsoil for your specific project. Topsoil is usually darker in color and contains a mixture of organic matter. If you have questions about the content of the soil, check with your supplier before purchasing.

Take Samples to Your Potential Suppliers

You may need to bring a sample of your dirt to your supplier if your property consists of sandy or clay soil. Your supplier can offer you advice regarding the correct topsoil for your land.

Accurate Handling

Topsoil needs to be screened to be sure all large chunks, rocks, sticks, clumps, roots or any other debris has been removed from the dirt. Anything remaining in the dirt could jeopardize the purity of the dirt.

Uses for Fill Dirt

  • Foundation – Fill dirt is used during construction to create a save foundation for homes or any area that requires stability and will not move or shift. Roads and driveways are usually constructed using fill dirt as a foundation for durability.

Uses for Topsoil

  • For Those Low Points – Take look at your yard, you probably have several low spots that are difficult to mow, or low spots that flood during rain or snow. These low spots often distort the look of your lawn. Topsoil is often used to fill in the low areas to allow new grass growth and less low dips, to create a smother landscape in your yard.
  • Shaping Landscapes – You may want to add volume to your yard by adding numerous levels of terrain. Topsoil is typically used to build these areas up. Some homeowners want to simply fill in some holes and simply lay sod or plant grass seed.
  • Growing Your Garden / Lawn – The most common use of topsoil is gardening. Plants require dirt that contains nutrients and balance to achieve their best growth.
  • Good Drainage – Topsoil can be added to your yard or property that tends to maintain water. Adding topsoil to these areas can help with those drainage problems.

Remember, fill dirt is normally used to add stability to your yard or project. Topsoil adds nutrients to the dirt and is typically used for gardens and plant/grass growth. Both types of dirt are necessary but each is used for different reasons.

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The Difference Between Fill Dirt and Topsoil (2)

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The Difference Between Fill Dirt and Topsoil (2024)

FAQs

The Difference Between Fill Dirt and Topsoil? ›

Fill dirt consists of a mixture of broken down rocks, sand and clay. It contains little fertility for plants to grow, or any organic matter. There are still many reasons you would want to select fill dirt for your project. Topsoil contains organic matter and is likely to shift or settle over time.

Can you turn fill dirt into topsoil? ›

Transforming fill dirt into topsoil is a practical and eco-friendly solution for your garden or landscape needs. You can foster a fertile environment that promotes plant growth by selecting quality fill dirt, incorporating organic materials, and adopting sustainable practices.

What do you use fill dirt for? ›

Fill dirt is a type of soil that is used to fill in holes, low spots, or other areas that need to be raised or leveled. It is typically made up of a mixture of clay, sand, and other materials, and is often compacted to provide a stable base for construction projects or other purposes.

What is the difference between dirt and soil? ›

What is soil? Comparatively, soil is “alive.” Where dirt is dead and devoid of a living ecosystem, garden soil is full of living organisms that help plants thrive. Soil is created when mountain stones and bedrock are broken down by wind and rain over centuries, with input from plants, animals, and bacteria.

What is the difference between fill dirt and topsoil? ›

Clean fill dirt is often used to fill in low spots in a yard to avoid pooling of water, while topsoil is perfect for areas that will contain a wide variety of plants. Clean fill dirt is usually composed of clay, silt or sand, while topsoil contains a variety of organic matter that helps to improve the soil quality.

How much topsoil do I put on top of fill dirt? ›

Two or three inches of topsoil on top of the fill dirt are ideal. The sod roots will find plenty of nourishment from a good quality layer of topsoil. Another great amendment for this is compost. Compost will help to balance your soil pH and provide plenty of beneficial micronutrients for plants.

Will plants grow in fill dirt? ›

Fill dirt consists of a mixture of broken down rocks, sand and clay. It contains little fertility for plants to grow, or any organic matter.

Can you use regular dirt as soil? ›

While some may use the terms dirt and soil interchangeably, they are not the same thing. Simply put, dirt is dead, while soil is vibrantly alive. Dirt is a lifeless mixture of minerals, air and water.

Is topsoil better than soil? ›

Whereas topsoil is better suited for a wide range of projects, gardening soil usually fits more of a niche need, sometimes even plant-specific needs. Gardening soil is a combination of a mixture of soils and textures that is designed to target a specific type of gardening project.

Do I need to mix dirt and garden soil? ›

Instead, it is recommended for in-ground gardens and raised beds. Garden soils can be mixed with soil in the ground using a tiller or shovel to improve the native soil. Depending on your soil type, you may also want to mix in other amendments like compost or ground bark.

Can you build on fill dirt? ›

Geotechnical engineers warn that homes should only be built on undisturbed natural soil or engineered fill. Because most natural soils have been in place for thousands of years, they have had a lot of time to densify properly. However, fill depends on mechanical compaction processes to reach high density.

What kind of dirt to fill low spots in a yard? ›

For shallow low spots (less than 2 inches deep), use a mixture of sand and topsoil. For deeper low spots (more than 2 inches deep), use a high-quality topsoil that matches the existing soil in your lawn. This ensures proper nutrient balance and promotes healthy grass growth.

What is the best dirt to fill holes in a yard? ›

You can use topsoil, potting soil, or even compost. Avoid using sand, as it won't pack well and can wash away easily. Once enough soil is added to fill the hole, use a tamper or your foot to compress it. It will help prevent the hole from sinking or caving in later.

Can you turn dirt back into soil? ›

Thanks to wheelbarrows full of organic matter, by the end of three growing seasons, the life of our soil was back on its proverbial feet and the transformation of our dead dirt into fertile soil was well underway. Changing our soil changed our world. Adding organic matter stashed tons of carbon below ground.

Can I grow grass on fill dirt? ›

While it's possible to DIY planting grass on hard or compacted dirt, it's a difficult and labor-intensive process. To ensure high-quality results, it's best to hire a local lawn seeding service to evaluate your soil, determine a seeding plan, and implement it effectively.

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