Description
Big Bud Liquid is Advanced Nutrients’ flagship phosphorus and potassium bloom booster — a professional-grade, highly concentrated liquid nutrient supplement that delivers precisely calibrated PK nutrition to flowering plants at the peak of their bud development cycle. Big Bud is one of the most extensively used flowering boosters in professional indoor growing worldwide, formulated through Advanced Nutrients’ research programme to provide the exact PK ratio and concentration that maximises bud size, weight, and density during the critical flowering development window.
What Big Bud Liquid Delivers
Big Bud’s formulation extends beyond the standard PK booster model by including a supporting cast of amino acids, vitamins, and trace elements alongside the core phosphorus and potassium content. The amino acid content provides immediately available organic nitrogen building blocks that support the enzyme activity involved in flower development without introducing excess nitrogen in ionic form that would suppress flowering hormone production. The L-amino acid form specifically is the biologically active configuration that plant enzymes can utilise directly, providing the most efficient route from external supply to cellular function. The vitamin B complex supports the metabolic activity of flowering tissue at the enzymatic level, while the elevated PK content provides the mineral foundation for the structural and metabolic demands of intensive flower production. Advanced Nutrients has supported Big Bud with growing trial data that demonstrates measurable yield increases versus control plants receiving base nutrition only. This research basis gives growers confidence that the results they experience reflect real agronomic effect rather than marketing claims. At The Horticulture Company, Big Bud Liquid is consistently one of our best-selling bloom booster products and receives some of the most positive customer feedback in our nutrient additive range.
Dosage and Timing
Use Big Bud Liquid at 2ml per litre from week two of flowering through to two weeks before harvest. Apply alongside Advanced Nutrients base nutrients or with any other professional base nutrient programme. Compatible with all growing media including soil, coco, and hydroponic systems. Monitor EC carefully when combining with base nutrients.







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