Mycorrhizal Fungi for Gardens

Match the method to the moment. At transplanting, sprinkle Mycorrhizal Fungi for Gardens on the roots and in the hole; direct root contact is where it does the most. For new soil, mix 4 tablespoons per cubic foot. For established beds, spread 4 tablespoons per 100 square feet into the topsoil and water it in; potted plants take 1/2 to 1 teaspoon for small and medium pots, 1/2 to 1 tablespoon for large ones. Repeat every 2–4 weeks in spring and summer, every 4–8 weeks in fall and winter.

They’re fungi that colonize roots and grow outward as fine threads, working as an extension of the root system that reaches water and nutrients, especially phosphorus, well beyond the roots themselves. The plant feeds the fungi sugars in exchange. Mycorrhizal Fungi for Gardens is led by Rhizophagus intraradices, the species that partners with vegetables, flowers and most garden plants. In practice, transplants establish faster, plants handle heat and dry spells better, and the fertilizer you apply gets used more completely.

Yes. Mycorrhizal Fungi for Gardens contains no nitrogen, phosphorus or potassium and no organic matter, by design. The fungi and bacteria improve how effectively roots find and absorb nutrients, but they don’t supply the nutrients themselves. The three layers work together: compost builds soil structure, fertilizer supplies nutrition, and the inoculant builds the biology that connects roots to both. It’s the answer to a garden that’s well fed and still underperforms.

New beds are one of the best uses. Bagged soil and soilless mixes are typically sterile or close to it: good structure, no biology. Mixing 4 tablespoons of Mycorrhizal Fungi for Gardens per cubic foot as you fill the bed inoculates the whole root zone before anything is planted, and a little extra sprinkled on the roots at transplanting seals the connection. Beds started this way skip the slow first season many new raised beds go through.

Both work against them. Tilling physically breaks up the fungal network each season, and soil-applied fungicides can suppress beneficial fungi along with their targets, two of the main reasons garden soil ends up biologically depleted. Reapplying Mycorrhizal Fungi for Gardens after soil disturbance restores the population, which is why there’s a maintenance schedule and not only a planting dose. Keeping deep tilling to a minimum helps the colony persist from one season to the next.

Soil biology runs on a longer clock than fertilizer. Colonization takes several weeks after root contact, so expect little visible change in the first month. Transplants show it first: seedlings inoculated with Mycorrhizal Fungi for Gardens hold through transplant shock and push new growth sooner, typically within 4–8 weeks. In established beds the return is cumulative over a season, with steadier growth, better drought tolerance and a stronger response to the feeding you’re already doing.