Grenade Black PK

A hand-crafted, sulphur-rich PK additive for heavy late flower

Grenade Black is a hybrid organo-mineral flowering additive that combines high-grade minerals with amino acids, naturally occurring plant hormones and biological cofactors to carry plants through the heaviest-demand stage of flower. It is built around a guaranteed analysis of N 3%, P 9%, K 19%, S 30%, Fe 1375 mg/kg and B 132 mg/kg, delivering a concentrated, sulphur-rich boost on top of the usual PK to support resin, aroma and overall flower density.

Key Benefits

• Sulphur-rich (S 30%) - drives secondary metabolite production behind resin, flavour and aroma
• High PK (P 9% / K 19%) - targeted phosphorus and potassium for peak flowering demand
• Broad active input blend - amino acids, cytokinins, gibberellins, auxins, betaines, polysaccharides, proteins, enzymes and trace minerals
• Concentrated dose rate - a little goes a long way for efficient, economical feeding
• Wide compatibility - integrates with most base nutrient regimes rather than replacing them

Standard PK not covering sulphur and trace demand in late flower?

As plants push deeper into flower, energy and mineral demand climb sharply, and a plain PK feed rarely covers the sulphur and trace-element needs behind resin and aroma. Grenade Black fills that gap with a broader organo-mineral profile, supporting denser, better-developed flowers without a full overhaul of your feed schedule.

How to Use

• When to use: introduce as PK demand increases in flower, running alongside your regular flowering nutrients
• Dosing: follow the concentrated dose rate on the product label for your reservoir or feed volume - it is a low-rate additive, so measure carefully and do not overdose
• Mixing: add to made-up nutrient solution, stir well, then check and adjust pH to your medium (around 5.8-6.2 for hydro/coco)
• Compatibility: use to supplement, not replace, your base A+B or one-part flowering feed