Symbiotic microbes
Symm is one program with two parts, applied together: Part 1 for resilience and Part 2 for nutrition. Here is how it works, how to use it, and what to expect.
Part 1 is an endophytic biological that works inside the plant to improve stress tolerance and support yield. It strengthens the crop's natural ability to handle environmental challenges through the season.
Part 2 is a microbial input that works in the soil to improve nutrient availability, converting soil-bound nutrients into forms the plant can readily absorb.
Yes. Symm is sold and applied as one program, never as separate products. Each part works on its own, but they are designed to complement each other: Part 1 strengthens the plant from within while Part 2 unlocks nutrients in the soil. Used together, they connect plant metabolism with soil biology for more consistent performance and a better overall crop response.
Symm is a concentrated living input. Once applied, the microbes establish themselves and multiply naturally in your field, which is why a small amount can effectively cover acres.
Meaningful improvements are often seen with a single application, and field data shows that 2 to 3 applications per season deliver more consistent results across different conditions. Recommended timing:
For perennial crops such as alfalfa, multiple applications per growing season add benefits in plant health, vigor, and yield consistency.
Yes. Symm works effectively with standard agricultural equipment, including atomizers and high-impact application systems. When used according to label recommendations, application equipment does not negatively affect efficacy.
In most cases, yes. Our isolates were selected for resistance to many common agricultural chemicals, including widely used fungicides, giving you flexibility to integrate Symm into your existing program. Refer to the Symm Chemical Compatibility list for specific guidance, and contact us before tank-mixing with any chemistry not listed. We are happy to assess compatibility of Part 1 and Part 2 with new agrochemicals on request.
Results vary with soil conditions, weather, crop variety, and management. The greater the environmental stress, the more pronounced the advantage tends to be.
Most Trichoderma products work primarily in the soil around the roots. Part 1 works inside the plant, moving into roots, stems, and leaves to form a natural partnership with the crop. Because it works from inside, it helps crops handle heat, drought, salinity, and other stresses more effectively, leading to healthier plants and improved yield.
Many products formulate around a single strain of Trichoderma harzianum. Part 1 combines multiple hand-selected isolates, chosen for efficacy, shelf-life, and function, because the root zone is a community, and communities perform better with diversity than with a single actor. We pair this fungal consortium with root-zone-competent bacteria in Part 2 rather than relying on bacteria or fungi alone. The result is a more resilient, more productive system than any single strain or single class of organism can deliver on its own.
Extracts and peptides deliver a single molecule and expect it to do the work of a living system. Symm takes a different path. Living microbes produce a wide range of active compounds on their own, and they keep communicating with the plant and with each other through the season. The partnerships behind plant resilience took hundreds of millions of years to evolve, and they cannot be reduced to one molecule or one strain. By delivering whole, living microbes, Symm lets that biology work the way it already does in nature, with consistency and at scale.
When the product is a living organism, purity, potency, and viability define success. Symm is grown and handled under cGMP-like conditions, mirroring FDA-style guidelines even where they are not legally required for agricultural biologicals, because that is what consistent field performance demands.
Many microbial products reach growers contaminated or no longer viable. Every Symm batch, and every individual bottle, undergoes rigorous testing and independent verification before it ships. With Symm you get exactly what the label promises.
Our microbial consortium also carries resistance to many common agricultural chemicals, including widely used fungicides, through a proprietary process that selects for strains with greater chemical tolerance. This gives growers more flexibility to integrate Symm alongside an existing crop-protection program.
Yes. Symm poses no risk of environmental persistence or invasiveness.
Part 1 contains endophytes that require living plants to survive. They do not persist in soil independently and naturally decline after harvest.
Part 2 uses microbial species commonly found in agricultural soils worldwide. The product temporarily increases activity during key growth stages, then populations return to natural levels.
Both parts are OMRI listed and backed by years of field use with no evidence of invasiveness or negative ecological impact.
Yes. Symm has been evaluated through independent field studies and farm trials across diverse crops, soils, and growing conditions. Studies consistently show the complementary performance of Part 1 and Part 2 when used together, with measurable improvements in plant resilience, nutrient availability, and overall crop performance in both controlled trials and real-world farm applications. Contact your advisor for results specific to your crops.
| Part | Active ingredient | Primary function |
|---|---|---|
| Part 1 | Trichoderma harzianum (multi-isolate consortium) | Confers abiotic stress tolerance and increased nutrient-use efficiency |
| Part 2 | Bacillus licheniformis Bacillus megaterium Bacillus pumilus Bacillus amyloliquefaciens Bacillus subtilis | Nitrogen fixation Soil phosphorus solubilization Soil nutrient cycling Soil nutrient cycling Nitrogen fixation and cytokinin production |