Precision agronomy. Modern science.
Honest recommendations.
Radix Ag delivers laboratory-grade soil analysis, expert-reviewed agronomic plans, and curated specialty inputs to turf and specialty crop operations across the southeast United States.
Our Story
Radix Ag was founded on a simple observation: the precision agronomy techniques that produce championship-grade turf will produce championship-grade crops — when properly applied. Most growers have simply never been shown how to use them.
The company was built on fifteen years of hands-on horticulture experience across the southeast United States — managing soil programs for high-end residential properties, advising on commercial turf operations, and refining the precision techniques that drive elite growing outcomes. The soil chemistry. The micronutrient timing. The foliar precision. The relentless attention to detail that separates excellent from average.
That expertise now drives our work with growers across the region. Pecan orchards, blueberry fields, peach blocks, market gardens, vineyards, sod operations, golf courses, athletic fields, premium landscapes, specialty crop operations — they all respond to the same precision techniques perfected in elite turf management. Radix Ag brings that proven methodology to operations of every size.
What Makes Us Different
The agricultural input industry is dominated by volume distributors and one-size-fits-all programs that do not serve the precision needs of specialty growers. Large retailers move tonnage. Local cooperatives do their best. University extension services are stretched thin. The result is that small and mid-size growers — the people doing some of the most interesting work in southeast agriculture today — too often make fertility decisions based on generic advice.
Radix Ag exists to change that.
We pair deep horticulture expertise with modern AI-assisted analysis. Our analytical engine cross-references your soil data against thousands of peer-reviewed studies, identifies subtle nutrient interactions that conventional methods miss, and generates comprehensive agronomic plans at a depth and speed previously available only to enterprise operations. Every recommendation is reviewed by a senior agronomist — AI augments expert judgment, it does not replace it.
The result is enterprise-grade agronomic service at a price every grower can afford.
Our Commitment
When Radix Ag recommends a product, it is because the science supports it for your specific operation — not because we have inventory to move. Products ship directly from our supplier network to your operation. We earn our margin honestly, on the value of the agronomic work itself.
If your soil report shows current fertility is adequate, we tell you so. The Radix Ag recommendation is yours to use however you choose. We compete on the quality of our science and the integrity of our advice. Nothing else.
Our Values
Precision
Every recommendation traces back to specific findings in your soil and tissue data. Nothing generic. Nothing assumed.
Transparency
Our methods, our sources, and our reasoning are documented in every report we deliver. No black boxes.
Integrity
We only recommend products when the science supports them. We tell you when you do not need anything at all.
Excellence
We hold our work to the same standards as the championship turf and high-value crop operations we serve.
Leadership
Joseph Parnisi
Joseph brings fifteen years of horticulture leadership across landscape, turf, and specialty crop operations in the southeast. His career has spanned high-end residential soil programs, commercial turf consulting, and specialty crop nutrition advisory across multiple southeastern states. He founded Radix Ag to make precision agronomy accessible to growers of every size, applying the same rigorous methodology that defines championship turf management to the broader specialty crop landscape.
Where We Operate
Radix Ag is headquartered in Cumming, Georgia, with primary service coverage across Georgia, Florida, Alabama, South Carolina, North Carolina, and Tennessee. Our mail-in soil analysis model allows us to serve operations of any size throughout the region — from quarter-acre specialty plots to multi-block commercial orchards and athletic complexes. National expansion is planned for 2027.
What We Believe
Healthy soil grows healthy plants. The best fertility programs start with knowing what your soil actually needs — not what we want to sell. Foliar products and biologicals are powerful tools when matched to specific deficiencies and timing. The precision techniques that produce perfect turf produce perfect crops, too. Honest agronomy works.
Work with Radix Ag.
Start with a soil test. Receive a custom recommendation report. Apply with confidence.
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