Grotek Monster Bloom — Heavy Flowering Enhancer

Grotek Monster Bloom — Peak Flowering Enhancer

One of the best-selling bloom boosters on the UK market — Grotek Monster Bloom is formulated for the stretch-to-finish period of flowering, where plants transition from early bud development into maximum flower size and density. A potent blend of P and K plus essential micronutrients that drive the biggest flowers plants can produce.

Why growers choose Grotek Monster Bloom:

• Heavy P and K for peak bloom — phosphorus for flower development, potassium for weight and density
• Designed for mid-to-late flowering — not a general-purpose booster; specifically for the flower-swelling phase
• Highly concentrated formula — small doses go a long way, good value per litre
• Best-seller for a reason — one of the most reliably used bloom boosters among UK hobbyist growers
• Works across hydro, coco and soil — universal across grow media
• Essential micronutrients — supports heavy bloom development without triggering deficiencies

Who it's not for:

This is a bloom booster, not a base nutrient — you still need a full base feeding programme (Canna, Mills, House & Garden etc.) alongside it. Start with the dilution on the label and work up; high-P/K boosters can lock out calcium if over-applied. Not suitable for veg-stage plants.

See it running in our Stone shop. Drop by Unit 24, Emerald Way, Stone Business Park (ST15 0SR) to see this fixture set up, or call us on 01785 556355 (Mon–Fri, 10am–5pm) to talk through whether it's the right choice for your tent size and grow style. In stock now with 24hr UK dispatch, or choose click & collect at checkout.