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Roots Organics Oregonism XL is a distinctive super-soluble blend of select beneficial fungi Vesicular Arbuscular Mycorrhizae (VAM), beneficial Bacillus bacteria, Pseudomonas bacteria, and humic acids. The species of microorganisms are specifically selected for fruiting and flowering plants with a tolerance to heavy fertilizing. Mycorrhizae colonize the root zone, forming a symbiosis with the plants roots, massively increasing the size and effective surface area, facilitating greater nutrient uptake, resistance to abiotic stress, and increased tolerance to drought. The beneficial bacteria in this unique inoculant increase the solubility and availability of plant and root growth promoting nutrients. Oregonism XL is incredibly versatile and effective in potting soil and hydroponics.