Improve What You Already Have With Soil Amendments

Targeted materials that improve soil performance and long-term plant health.

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Revitalize Your Soil with Amendments

Not every project needs a full soil replacement. Soil amendments are designed to enhance existing soil by improving structure, drainage, moisture retention, and nutrient availability.



Greatsoil offers high-quality soil amendments that help correct problem soils and support healthier plant growth. Whether you are dealing with compacted ground, poor drainage, or nutrient-poor soil, the right amendment can make a measurable difference.

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Soil Amendment Products

Your garden deserves the best foundation possible. At Greatsoil, we've been helping North County residents achieve their landscaping dreams for over five decades. As a locally and family-owned business, we understand the unique soil needs of our community. Whether you're a seasoned gardener or just starting out, our team is ready to provide expert advice and top-quality soil amendments. Don't let another growing season pass with subpar soil. Request a call back from Greatsoil today, and take the first step towards a lush, vibrant landscape.

All products are sold per cubic yard.

Pile of dark, granular compost.
Black, granular material, likely charcoal or ash, densely packed with various-sized pieces.
Close-up of light brown, grainy sand with rough, textured surface.
Close-up of light brown, grainy sand with rough, textured surface.
Pile of dark brown mulch.
Bag of Nor-Cal horticultural perlite, a product of the USA. Net contents: 4 cu ft.
Bag of Nor-Cal vermiculite; net contents 4 cu. ft. Beige bag with blue lettering and logos.
Bag of
Bag of Alaska Peat Inc. Canadian Sphagnum Peat Moss, white with a mountain logo and blue text, 3.8 cu. ft./107L.
Dark gray gravel surface.
Pile of dark gray, porous lava rocks.
Gray and tan pumice rock aggregate.
Close-up view of dark gray, granular gravel. Small, light-colored stones are scattered throughout.
Brown pile of flailed coir on white paper, labeled
Bag of
Pile of dark brown fir fines on white paper; labeled
Pile of light gray, 3/16

How Much Proudct Do You Need?

If you know the area you'd like to cover, we've got a great calculator to help you purchase the perfect amount of soil. Check out the calculator or give us a call anytime!

Frequently Asked Questions

  • Do you deliver?

    Yes!  Skip the hassle of hauling soil. We'll bring it right to your doorstep in San Marcos and surrounding areas.

  • Why do I need soil amendments?

    Healthy soil is the foundation of a beautiful, productive garden. Greatsoil's amendments are essential for:

    • Enhancing nutrient availability to plants
    • Improving soil structure for better root growth
    • Increasing water retention in sandy soils
    • Enhancing drainage in clay soils
    • Promoting beneficial microbial activity
    • Reducing soil erosion and compaction

  • How much soil should I order?

    First measure the area you're planning to cover. Then we recommend using our Cubic Yard Calculator and then ordering 20% to 25% more than your calculated volume. This allows for compaction, settling over time, and inaccuracies in measuring the area.