Elite 91 Roots

Elite 91 Roots is one of the most highly effective and dynamic root enhancing products available on the market today.  

This unique, proprietary liquid formulation contains the highest quality ingredients, boasting high concentrations of multiple, diverse and viable beneficial bacteria, fungi, vitamins, plant derived minerals, protein hydrolysates, polysaccharides, organic chelates & activators.

Natural boosting of plant health and growth hormones all in one bottle for optimal root development and increased plant vigor.

This product is a tested and proven root and plant growth enhancer

Sizes: 250 mL, 500 mL, 1-Liter

Organic: Yes


Price From: $53.18

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Elite 91 Roots contains Plant Growth Promoting Rhizobacteria (PGPR),a group of diverse free-living bacteria that colonize and construct a protective biofilm around the rhizosphere (root zone) and significantly benefit the root growth and vigor in plants. The species of rhizobacteria (PGPR) in our formulation are specifically selected for their proven, effective and successful modes of action.

With proper application of Elite 91 Roots, horticulturists and growers can expect Increases the size, density and overall effective surface area of the plant’s root system; resulting in healthy dominant crop growth; as well as, greater water and nutrient uptake for optimal yielding harvests.

PGPR exert a direct effect on plant growth by supplying biologically fixed nitrogen, increasing phosphorous uptake through solubilization of inorganic phosphates, and facilitating the breakdown of fertilizers for the efficient utilization and uptake of other nutrient elements, e.g., organic compounds and micronutrients.

This group of bacteria exert an indirect effect on plant growth by serving as the major source of synthesizing broad-spectrum peptide antibiotics/secondary metabolites and cell wall degrading enzymes that are active as a biocontrol and biopesticide preventative/suppression against root rot, powdery mildew and other harmful plant diseases caused by various bacterial, fungal, viral and nematode pathogens.

Additionally, PGPR significantly increases yields in various high-value crops, enhances rooting of hardwood and semi-hardwood cuttings, increased seed germination and enhanced emergence of seedlings and cuttings under various conditions.

Use of this root zone product Induces natural production of plant growth hormones such as auxins, cytokinins, gibberellins, ethylene and abscisic acid for maximizing genetic plant growth potential.

Expect increased tolerance to harsh environmental conditions, salinity, and delays the onset of drought stress. This delay manifests itself through enhanced root growth, maintenance of stomatal conductance, water retention, net photosynthesis, changes in free amino acid concentrations and a delay in drought-induced stress changes in leaf/flower gene expression(s).

Stimulation of host defense mechanisms; also known as Induced Systemic Resistance. ISR provide substantial protection to plants by boosting the immune system and controlling disease.


Be sure to properly mix or shake Elite 91 Roots prior to use.

  • Add Elite 91 Roots with every feeding from seedling/cloning growth stage up until the 5th or 6th week of the crops fruiting/flowering cycle.
  • Soil, Coco, Hydroponics: Add 0.5 ml – 2 ml per gallon of nutrient solution.
  • Compost tea: Add 1 – 5 ml per gallon of nutrient solution.
  • Seedlings/Cuttings: Pre-soak your preferred choice of growing medium in a solution using 1 – 5 ml per gallon of water to protect, stimulate and boost vitality. Continue to use the same dosage rate to feed your new starts throughout the rooting phase.
  • Elite 91 Roots is suitable with all soil, soilless and hydroponic based growing mediums and can be used in conjunction with any premium quality nutrient and/or fertilizer.

Note: Do Not use hydrogen peroxide or any chemical sterilizing agents when using Elite 91 Roots. 

E91 Roots Application & Treatment Rates Based On Bottle Size: A Little Goes A Long Way!

250 ML Bottle:

  • 0.5 ML per gallon will treat 1,892 Liters (500 gallons US) of nutrient solution.
  • 1 ML per gallon will treat 946 Liters (250 gallons US) of nutrient solution.

500 ML Bottle:

  • 0.5 ML per gallon will treat 3,785 Liters (1,000 gallons US) of nutrient solution.
  • 1 ML per gallon will treat 1,892 Liters (500 gallons US) of nutrient solution.

1000 ML Bottle:

  • 0.5 ML per gallon will treat 7,570 Liters (2,000 gallons US) of nutrient solution.
  • 1 ML per gallon will treat 3,785 Liters (1,000 gallons US) of nutrient solution.



Manufacturer Elite 91