Description

Give your plants the ultimate flowering boost with Monster Bloom, a powerful bloom nutrient designed to support explosive flower development, increased flower density and higher overall yields. Trusted by professional and hobby growers alike, Monster Bloom provides a rich, fully balanced nutrient profile to help your plants reach their full genetic potential during the flowering stage.

Read the full product overview here...

Monster Bloom is a premium flowering nutrient formulated with a high concentration of phosphorus, potassium and essential trace elements to stimulate prolific flower and fruit production. Designed for use throughout the flowering phase, this nutrient enhances flower formation, improves flower density and supports larger, heavier harvests.

Compatible with soil, coco and hydroponic systems, Monster Bloom works alongside your base nutrient program to maximise nutrient uptake, improve plant health and deliver consistently impressive results.

Key Features & Benefits

  • Promotes Vigorous Flowering: High phosphorus content drives strong flower formation and early flower set.
  • Enhances Flower Density: Optimised nutrient ratios encourage fuller, heavier flowers.
  • Supports Maximum Yields: Helps plants produce larger harvests by improving nutrient assimilation during bloom.
  • Complete Trace Element Profile: Contains essential micro-nutrients to support overall plant health and flowering performance.
  • Easy-to-Use Formula: Simply add to your nutrient solution with no complicated preparation required.
  • PGR-Free: Free from synthetic growth regulators for clean, natural flowering support.
  • Versatile System Compatibility: Works effectively in soil, coco coir and hydroponic systems.

How to Use

  • Shake well before use.
  • Mix 2 to 4 ml per litre of water, adjusting based on plant size, stage and environmental conditions.
  • Apply throughout the flowering stage from early bloom to late flowering for optimal results.
  • Use in combination with your base nutrients and adjust pH after mixing.

Frequently Asked Questions (FAQ)

When should I start using Monster Bloom?
Begin at the onset of flowering to support flower set and continue throughout the flowering phase for maximum results.

Can Monster Bloom be used in all grow mediums?
Yes, it is compatible with soil, coco coir and hydroponic systems.

Is Monster Bloom a complete nutrient?
No, it is a bloom-specific additive designed to complement your base nutrient feed during flowering.

Will it work with hard water?
Yes, Monster Bloom performs well in both soft and hard water conditions.

During flowering, plants require higher levels of phosphorus, potassium and trace elements to develop dense, healthy flowers and maximise yields. Monster Bloom delivers these critical nutrients precisely when they are needed, helping plants produce larger, heavier flowers with improved overall quality. Easy to use, versatile and PGR-free, Monster Bloom is an essential bloom booster for growers seeking bigger, denser flowers and stronger harvests.

Explore the range

See all Additives & Boosters (184)

Not sure which one is right for your setup? Message us on WhatsApp or call 0121 553 7872.

Delivery, returns and FAQs

Will my order arrive in plain packaging?

Yes. Every order is sent in plain, unbranded packaging as standard.

How quickly will my order arrive?

Order standard size items by 12pm on a working day and choose Next working day at checkout, and your order will be with you the next working day. Standard delivery takes 2 to 3 working days.

Bulky items such as grow tents, large fans and 50L bags of soil go by courier in 2 to 3 working days, or on a pallet for very heavy orders. Next day is not available for these, and if your basket includes a bulky item the whole order travels with it.

UK delivery is free on orders of £94.99 or more, except for bulky items. See our delivery page for full prices.

Can I collect from the shop?

Yes. Choose Click & Collect at checkout and pick up for free from our shop at Unit 2 Black Lake, West Bromwich, B70 0PJ. Orders are ready within 1 hour.

Can I return an item?

You have 14 days from receiving your order to tell us you want to cancel, then a further 14 days to send it back. Items need to be unopened and in a resaleable condition.

If you change your mind, the return postage is paid by you. If something arrives faulty or damaged, send us photos within 48 hours and we will cover the cost of putting it right. Full details are in our refund policy.

Do you price match?

Yes. If you find the Grotek Monster Bloom Flowering Nutrient 2.5kg cheaper at another UK retailer, use the Price Match button on this page. We usually reply within one business day.

Need help choosing?

Speak to our team. Call us on 0121 553 7872, message us on WhatsApp, or visit the shop in West Bromwich.

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