Great White Nutrients

Great White is widely regarded as one of the premium mycorrhizal inoculants available to indoor growers — a comprehensive biological product containing 15 species of mycorrhizal fungi, 11 species of beneficial bacteria and 2 species of trichoderma in a single concentrated powder. Used at transplanting and throughout the vegetative phase, Great White establishes a thriving root-zone ecosystem that dramatically improves nutrient uptake, drought tolerance and plant resilience.
The Science of Mycorrhizal Inoculants
Mycorrhizal fungi form symbiotic relationships with plant roots that date back 450 million years — they are arguably the most important biological relationship in plant growth. The fungal hyphae extend the effective root surface area by up to 700%, accessing soil pore spaces that root hairs cannot reach. They are particularly effective at scavenging phosphorus, zinc and copper from areas of low mineral availability, transporting these nutrients directly to the root cell in exchange for sugars from the plant.
Great White’s 15-species mycorrhizal consortium includes both ecto and endomycorrhizal fungi, providing optimal colonisation across a wide range of growing substrates — from organic soil to coco and amended substrates. The bacterial species in Great White produce additional plant growth hormones, fix nitrogen and produce natural antibiotics that suppress pathogenic organisms.
Using Great White for Maximum Root Development
Apply Great White directly to the root ball at transplanting, or use as a seed treatment for germinating seeds. For established plants, incorporate into your irrigation solution at low doses (0.2–0.5g per litre of irrigation water) to encourage deeper root colonisation. Great White is compatible with most mineral and organic nutrient programmes. Avoid using alongside systemic fungicides, which would kill the beneficial fungi.
We have been recommending Great White to UK growers since 2017 as one of the most effective biological investments in any grow room. Browse the full range below.