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Education May 2, 2026 · 6 min read By Greg Bennett

Synthetic vs. Organic: What’s Really in Your Fertilizer?

Many “slow-release” synthetic fertilizers are plastic-coated. Here’s what that means for your soil — and what we use instead.

Pick up a bag of premium synthetic fertilizer and look for the words “polymer-coated” or “controlled-release.” That coating — the technology that meters out nutrients over weeks — is a thin shell of plastic around every granule.

The Microplastic Problem

When the nutrients inside dissolve, the plastic shell stays in your soil. Season after season, application after application, those shells accumulate and slowly fragment into microplastics — in the ground where your kids play and your vegetables grow. A typical synthetic program can put pounds of plastic on a single lawn every year.

What Synthetics Do to Soil Life

How Organic Feeding Works

Organic fertilizers are food, not chemicals — they feed the microbial life that in turn feeds your grass, exactly the way nature builds a prairie. No plastic coatings, no salt burn, no “keep off the lawn” signs. The result comes a little slower and lasts a lot longer: real soil that produces real turf density year after year.

Since our start, Thrive customers have kept an estimated 315,000+ pounds of fertilizer plastics and synthetics off Houston-area lawns. Your yard can be part of that.

Greg Bennett, co-founder and co-owner of Thrive Fertilizing
Greg Bennett
Co-owner · 25+ years in Houston lawn care

Greg spent 25+ years building a lawn care business with his dad and brother before starting Thrive with his wife Aimee and son Jake. He has been reading Houston soil — gumbo clay, sandy piney woods, and everything between — since the 1990s.

More about the Bennett family →

Ready to transform your lawn? Call your local Thrive team or book a free assessment. We'll look at your specific yard and recommend the right program.

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