MAMMOTH P 1LITRE

Description

MAMMOTH P 1 LITRE is the large commercial format of Growcentia’s scientifically proven phosphorus-cycling microbial inoculant, providing serious UK grow operations with a cost-effective, extended supply of the beneficial bacteria that unlock and continuously recycle phosphorus in the root zone. We have been recommending Mammoth P to UK growers since 2017 as the benchmark biological growing additive for cultivators who base their decisions on science rather than marketing.

Why Phosphorus Cycling Makes a Measurable Difference to Yield

Phosphorus is one of the most critical yet least efficiently utilised macronutrients in conventional nutrient programmes. A significant proportion of the phosphorus applied through base nutrients precipitates into insoluble compounds in the root zone — calcium phosphate and iron phosphate complexes that accumulate in growing media and bind phosphorus away from plant roots. This loss is invisible but ongoing throughout the grow cycle, meaning plants are consistently working with less available phosphorus than the nutrient programme delivers. Mammoth P’s phosphatase-producing bacterial consortium systematically breaks down these insoluble complexes, continuously releasing phosphorus back into plant-available soluble form. The biological cycling effect is cumulative and continuous — unlike a single PK boost application, Mammoth P maintains elevated phosphorus availability throughout the grow cycle. Independent research consistently demonstrates measurable yield and growth improvements from phosphorus cycling bacterial inoculant treatment.

Economy, Application, and Building the Complete Biological Programme

The 1-litre format of Mammoth P delivers significant economy per treatment compared to smaller sizes, making it the natural choice for commercial growers or home cultivators who use Mammoth P consistently across multiple crop cycles. At typical application rates of 1–2ml per litre, a 1-litre bottle provides between 500 and 1000 litres of treated nutrient solution — sufficient for an extended production season. Apply at every watering from seedling establishment through early flowering. For the most effective biological root zone programme, combine Mammoth P with DynoMyco mycorrhizal inoculant and a broad-spectrum beneficial bacterial product like King Crab. Browse our full Mammoth P range — also available in 120ml and 500ml — and our complete biological growing additive selection.

Browse the full range: Explore our complete New Products range at The Horticulture Company. Also in this range: IONIC CALMAG PRO, UGRO XL BASIC 70LITRE, EXHALE CO2 BAG, PLANT !T YOYO (PACK OF 8).