Topsoil vs. Garden Soil: What the Difference? (2024)

The first step to creating a garden is preparing the planting bed. After turning over the top layer of soil, amending it with nutrients or adding to its depth are potential steps in the process. If you're building a raised bed garden or planting in containers or pots, you'll be starting from scratch. Topsoil and garden soil are the two best suited for growing edible and flower gardens, starting and maintaining lawns, and planting trees and shrubs. Choosing the right soil for your project saves you time, labor and cost.

What Is Topsoil?

Topsoil is the uppermost layer of the earth's crust composed of clay, sand and silt. It consists of minerals broken down from different types of rock, wood, leaves and other organic materials. It is active with organisms, microorganisms and bacteria working to break down solids into nutrients that support all plant life.

What Is Garden Soil?

The ideal soil composition for gardens is loam consisting of 40 percent silt, 40 percent sand and 20 percent clay. Garden soil has acidity and alkalinity balanced for specific plant growth along with minerals and nutrients readily available to feed plants. Garden soil is topsoil amended with organic or inorganic fertilizers to support edible, ornamental and landscape plants.

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Topsoil vs. Garden Soil

Topsoil is graded according to the degree it been processed along with any specialized organic material it contains. It may be screened or unscreened and contain higher percentages of sand or clay. Unscreened topsoil includes small rocks, sticks, woods chips and other organic solids. It does not contain inorganic fertilizers. Topsoil is sold in bulk by the cubic yard and cubic foot with a 40-pound bag ranging in price from $2 to $5.

Garden soil is a mixture of screened topsoil broken down into uniform particles and consistency with nutrients immediately available to plants. Color, particle size, and consistency differ according to source, but the end product is a ready to use, crumbly mix mostly free of solid material.

Garden soil may be labeled organic or include inorganic fertilizer, but it is not graded according to quality or type. It can be purchased by the cubic yard and is readily available at garden centers in bags at prices ranging from $2.50 to $15 per cubic foot.

TopsoilGarden Soil
Graded by typeUngraded
No inorganic fertilizerMay include inorganic fertilizer
Includes organic materialIncludes organic material
Clay, silt and sand percentages varyLoam
Screened or unscreenedScreened
Particle size variesUniform particle size
Holds moistureWell-draining
$2 to $5 per cubic foot$2.50 to $15 per cubic foot

When to Use Topsoil vs. Garden Soil

Good quality garden soil is more expensive than topsoil, although some specialty topsoils, like mushroom compost, can get pricey.

Standard topsoil mixtures are rated for specific landscaping projects such as planting lawns, trees and shrubs and flower gardens. It works well to fill in holes and level uneven lawns and can be added where existing topsoil levels are insufficient to support plant growth. When building a raised garden bed or growing a container garden, topsoil can be used as a lower layer with garden soil on top. Topsoil is practical and less costly for large garden projects that require cubic yards of soil.

Garden soil can be added to long-standing flower and vegetable gardens to replace nutrients plants have used up. This is a good choice for the top layer in raised beds and container gardening. It is already broken down to drain well and includes nutrients immediately available to plants.

Tip

When you turn over topsoil for a new flowerbed or vegetable garden, the existing topsoil layer is very likely to contain all the nutrients and minerals plants need to grow well. You may need to adjust the pH level or amend with some organic compost or mulch, but most topsoil is adequate for a first in-ground garden. If your layer of topsoil isn't deep enough, either a higher grade of topsoil or a layer of garden soil can be added.

FAQ

  • Is it possible to grow plants in topsoil?

    Yes, you can grow plants in topsoil as long as the soil extends to the depth needed for the plants you want to grow and has the correct pH level.

  • Should you use garden soil or topsoil in a raised bed?

    A good quality topsoil can be used as the bottom layer in a raised bed, but an 8-inch layer of garden soil on top provides superior drainage and nutrition for vegetable plants.

  • What goes down first, topsoil or garden soil?

    Topsoil should go down first before adding garden soil to raised beds, container gardens, pots, and hanging baskets. Use topsoil to build depth before adding garden soil.

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Topsoil vs. Garden Soil: What the Difference? (2024)

FAQs

Topsoil vs. Garden Soil: What the Difference? ›

Garden soil is just topsoil that has extra organic matter mixed in, like compost, peat, bark shredding, or fertilizer. It's intended to be used in the garden, where your plants benefit from the added fertility and nutrients. Some garden soils are even specifically tailored for vegetables or flowers.

Can I use topsoil in my garden? ›

Creating new garden beds: Topsoil is often used to create new planting areas or to expand existing ones. It provides a nutrient-rich base for plants to grow in. On its own, topsoil is not a great growing medium and I would recommend mixing in compost.

Can I put garden soil on my lawn? ›

Garden soil may not provide the necessary nutrients in the right proportions for healthy grass growth. Consider using a specialized lawn soil or adding fertilizers to meet the grass's needs. Soil pH: Grass generally prefers a slightly acidic soil pH, while garden soil may have a different pH level.

What is the best soil for outdoor gardening? ›

The best soil for gardening is well-draining but moisture retentive. While loamy soil is ideal for most plants, it's important to keep in mind that different plants thrive in different types of soils. For example, succulents need sandy soil, and certain trees and shrubs thrive in clay soils.

What soil to use for a vegetable garden? ›

Out of these, loamy soil is the best soil for vegetable gardens as it promotes the growth of almost all types of vegetables.

Which is better topsoil or garden soil? ›

Your best choice is between topsoil or garden soil. Topsoil is best for the lawn, or for lower layers of garden beds. Garden soil is ideal for top layers of any garden.

Which top soil is best for growing plants? ›

The best topsoil for growing plants is loamy soil. It is a mixture of sand, clay and another type of soil particle known as silt. Silt occurs as a deposit in river beds. The size of the silt particles is between those of sand and clay.

Does adding topsoil help grass grow? ›

Topdressing is the best way to rejuvenate your lawn without pulling up all your grass (which is a pain) and starting over. As your grass grows through the layer of topdressing, the organic material is incorporated into the soil beneath it, adding nutrients and improving soil quality.

Do you plant grass seed in topsoil or garden soil? ›

'To prepare your soil before planting grass seed, simply till and loosen the soil to create the best growing conditions – you don't need to put down topsoil,' says Jeremy Yamaguchi, CEO of Lawn Love.

Is lawn soil the same as garden soil? ›

If you are planning gardening or a landscaping project, it is essential to understand the difference between topsoil and lawn soil. Topsoil is a general term for any soil used as a loose, upper layer of soil in a garden bed, whereas lawn soil is often made of specially blended nutrients optimized for grass growth.

What kind of dirt do I use to fill my yard? ›

The Best Fill Dirt For Leveling A Yard

Experts recommend topdressing the yard using friable soil, which is a mixture of top soil and sand.

What is the ideal type of soil for gardening? ›

The ideal mixture for plant growth is called a loam and has roughly 40% sand, 40% silt and 20% clay. Another important element of soil is its structure, or how the particles are held together - how they clump together into crumbs or clods. A loose structure provides lot of pore spaces for good drainage and root growth.

What is garden soil? ›

What is Garden Soil? Garden soil is topsoil that has been enriched to make it better suited for plant growth. Amendments may include compost or other organic matter, and some soils – like perennial potting mixes – have added ingredients to encourage growth of specific types of plants.

Can you mix topsoil with garden soil? ›

You may need to adjust the pH level or amend with some organic compost or mulch, but most topsoil is adequate for a first in-ground garden. If your layer of topsoil isn't deep enough, either a higher grade of topsoil or a layer of garden soil can be added.

Can you grow vegetables in topsoil? ›

Topsoils with a loamy texture are great for gardening because they are easy to till and promote airflow. You will typically see topsoil sold in larger quantities than gardening soil, and it is also more of an “all-purpose” soil as well.

What is the best soil for tomatoes? ›

Soil Requirements

Tomato plants will grow well in well-drained sites that receive full sun for most of the day. The soil pH should be slightly acidic (6.2 to 6.8). Excess nitrogen can result in plants with lush, vigorous foliage but little fruit production.

Can I use topsoil instead of mulch? ›

Adding topsoil alone does not ensure soil performance, especially if the “topsoil” is mostly inert and contains little to no organic matter or active soil microbes. Mulch is a material applied to the soil surface to discourage weeds, provide shade and reduce moisture loss through evaporation.

How much topsoil for a vegetable garden? ›

Factors That Affect Soil Volume in Raised Beds

If you're not sure how deep a raised garden bed should be, the rule of thumb is 8-12 inches for most vegetables. However, if you plan to grow root crops such as carrots or beets, 12-18 inches is recommended.

Is bagged topsoil any good? ›

Inexpensive bagged topsoil is rarely any good. In my observation, it is usually composed of poorly composted wood chips, silt, and sand. This mix will not support good plant growth. In addition, having different layers of materials in your raised bed will make for a very poor rooting environment.

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