About Greatsoil

Quality soil and landscape materials backed by experience, standards, and dependable service.

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Who We Are

Greatsoil is a locally based soil and mulch supplier serving San Marcos and the surrounding North County San Diego area. We work with homeowners, landscapers, and contractors who need reliable materials, fair pricing, and a team that understands how soil performs in real-world conditions.



Our focus has always been simple. Provide high-quality products, price them competitively, and make the process easy from start to finish.

Quality Without Compromise

We believe competitive pricing should never come at the expense of product quality. Our soils, composts, and amendments are carefully sourced and blended to deliver consistent performance. Customers know what they are getting every time they order, with no surprises and no shortcuts.



Many of our products meet strict industry standards, including USA Composting Council certification, ensuring responsible sourcing and dependable quality.

Industry Knowledge and Community Involvement

Greatsoil is proud to be a member of the San Diego Plant and Flower Association, staying connected to industry best practices and the local horticultural community. This involvement helps us stay informed, improve our offerings, and better serve our customers.

Service That Works for Real Projects

We understand that timing and logistics matter. That is why we offer:

  • Competitive pricing without sacrificing quality
  • USA Composting Council certified products
  • Membership in the San Diego Plant and Flower Association
  • Convenient in-store pickup and delivery options
  • Bilingual support for our diverse customer base
  • Fast turnaround, with many orders ready within 24 hour



Our goal is to keep projects moving smoothly, whether you are picking up a small load or scheduling bulk delivery.

Frequently Asked Questions

  • Do you deliver?

    Yes, we provide both delivery and pick-up options for our customers. This flexibility allows you to choose the most convenient method for obtaining our products.

  • 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. 

  • What soil should I use for gardening?

    For general planting purposes, our planter mix is the ideal choice. It provides an excellent foundation for a wide variety of plants and gardening needs.

  • Do you sell organic or chemical-free mulch?

    Indeed, we do. All of our mulch products, with the exception of our dyed mulch, are organic and free from chemicals. This ensures a natural and safe option for your gardening needs.

  • What types of soil do you offer?

    We offer an extensive range of 68 different soil types, each customized to meet specific requirements. Our diverse selection allows us to cater to a wide array of gardening and landscaping needs.

  • Can I make a custom formula soil?

    Absolutely. We offer a personalized service where we create custom soil formulas based on your specific needs, at no additional cost. This ensures you get the perfect soil mix for your unique gardening requirements.

  • What is soil amendment and why would I need them?

    Soil amendments, such as compost, are materials added to soil to enhance its quality. They improve soil by introducing nutrients, beneficial microorganisms, and enhancing properties like water retention and drainage. These amendments promote healthier root systems and overall plant growth.