Grotek Monster Bloom™ – Classic Bloom Enhancer




Monster Bloom™ is a worldwide industry standard and a top-selling bloom enhancer for a reason. It is packed full of essential nutrients that all plants crave as they strive to maximize yield. This highly concentrated formula provides a powerful punch to plants and supplies the nutrients necessary to support the flowering and ripening stages.

Application Rate: 500g makes 5000L of solution.

Soil/Soilless/Water Culture: Mix 6 g / 19 L. Use every time you fertilize.

In plain words, Monster Bloom will make your flowers bigger and better.


Larger Flower Clusters
Improves Harvest Yield
Supports Ripening Stage

Monster Bloom provides specific ratios of nutrients to optimize conditions for plant growth, specifically during the bud development and blooming stage. Monster Bloom’s high concentrations of phosphorus and potassium help plants during periods of rapid development, by supporting:

– Protein and starch synthesis
– Stalk and stem strength
– Improved moment of sugars and starches within the plant
– Respiration and CO2 uptake

Monster Bloom ingredients are sourced with quality in mind, while also focusing on high solubility and plant availability. This means easier mixing and a bigger influence on the plants.

Every bottle of Monster Bloom contains the nutrients that plants require to support bountiful flowers, while having benchmark low level of impurities.

Begin application when buds are forming and continue to use with every fertilizer application during the blooming cycle.

Discontinue use 1−2 weeks before harvest of crops.

Monster Bloom goes hand in hand with HEAVY BUD PRO. These 2 products should be used together to achieve the highest potential.

Monster Bloom will increase the size of the flowers, while Heavy Bud Pro will make those flowers denser, harder, give aroma and flavor.

When your flowers are packing on the yield, Monster Bloom and Heavy Bud Pro are the best quality products to keep that going. Monster Bloom is a high phosphorous powdered concentrate that’s going to give you explosive results with your flowers.

Heavy Bud Pro is the perfect companion as it complements the high phosphorous of Monster Bloom with potassium and nitrogen. Using these two products together essential, to not only get the size that you’re looking for but the quality that’s essential with every harvest you have as a personal grower.

Monster Bloom is undoubtedly one of the most used and classic fertilizers in the United States, and one of the best sellers world-wide. This is not surprising considering the excellent results it provides to all cannabis growers that have used it.

But, what properties and benefits make Monster Bloom become a “bestseller”?

We will start by talking about the stimulating effect that this fertilizer has on plants. In this sense, the high concentration of phosphorus, which stimulates the roots of the plant during its period of flowering, make crops to be full of flowers in the middle of its development, that is particularly noteworthy.

On the other hand, Monster Bloom also provides an important amount of potassium, which makes the plant do a better process of photosynthesis, generating a greater amount of starch in all tissues of the plant.
In addition, Monster Bloom also boosts the flavor of marijuana buds, something that your palate and mind will appreciate. However, you should stop using it two weeks before the end of the flowering stage.

For both, hydroponic and soil crops, the following dosage is recommended: 6 grams of Monster Bloom per 19 litres of irrigation water.

A product that is perfectly compatible with Heavy Bud by Grotek, to enhance the final results in your crop.

Monster Bloom with its mixture of PK 50/30 will reach your buds to a total fattening.

Dosage and usage of Monster Bloom by Grotek:

Add 0.3g of Monster Bloom per litre of water. That’s approximately 3 grams per 10 litres.

Use it during the fattening stage only. If used when the flowering has just begun, it can slow your plants down since they could be over-fertilized due to the strong concentration of PK. Use it from the 4th or 5th week, depending on the varieties, until 10 days before the harvest.

Composition of Monster Bloom by Grotek:

NPK 0-50-30 (w/w)
50% Phosphorus
30% Potassium

Available Phosphoric Acid (P2O5) ………. 50%
Soluble Potash (K2O) ………. 30%

Watch Video where Simon from Grotek Nutrients is back to chat about late flowering, with Monster Bloom and Heavy Bud Pro, and how to use them together.

Grotek™ Monster Bloom™ 
Size  Case Size
Grotek™ Monster Bloom™ 20 g Box (15 pc)
Grotek™ Monster Bloom™  130 g 12
Grotek™ Monster Bloom™ 500 g 6
Grotek™ Monster Bloom™ 2.5 kg 1
Grotek™ Monster Bloom™ 5 kg 1
Grotek™ Monster Bloom™ 10 kg 1