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Flower / Bloom Boosters
Bloom boosters are designed to support plants during the flowering stage, helping encourage stronger flower development, improved plant performance and better final results. Used alongside a balanced base feed, they can help growers get more from their flowering plants in indoor setups.
At Acorn Horticulture, we supply a range of bloom boosters in the UK for indoor growers using coco, soil and hydroponic systems. Whether you are flowering under grow lights or running a complete indoor setup with grow tents and measuring tools, bloom boosters can help enhance your flowering programme.
Dense Bud Compactor Flowering Potassium Booster
Price range: £42.50 through £84.50 incl. Vat
Dense Bud Compactor is a concentrated flowering booster designed to deliver added potassium during late bloom, helping support denser flowers, improved crop quality and efficient sugar movement to flowering sites.
- ✔ Concentrated potassium supplement for use in the final flowering stage
- ✔ Helps support compact flower development and improved overall crop quality
- ✔ Aids sugar transport, protein synthesis and essential oil production
- ✔ Suitable for hydroponics, soilless media and coco fibre systems
- ✔ Use once per week in the last 3 weeks of flowering with a final flush period
- ✔ Available in size options including 250ml, 1l, 5l, 10l, 1kg and 2.5kg
Hot
Green Planet Bud Booster Flower Enhancer
Price range: £49.00 through £99.00 incl. Vat
Green Planet Bud Booster is a PK flower enhancer designed to support flower formation and bulking during the middle of the flowering stage. With a 1-50-30 analysis and a choice of 500g, 1kg and 2.5kg sizes, it is suitable for growers looking to support bloom development as part of a balanced feeding programme.
- ✔ PK bloom booster with a 1-50-30 analysis
- ✔ Helps promote flower formation and bulk in mid flowering
- ✔ Supports plant metabolism during demanding bloom stages
- ✔ High potassium content helps support plant quality and starch production
- ✔ Formulated to help increase flower size and density
- ✔ Available in 500g, 1kg and 2.5kg options
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Rock Resinator Flower Enhancer for Bloom Stage
Price range: £223.99 through £769.00 incl. Vat
Rock Resinator is a flowering enhancer formulated to support heavier blooms and increased essential oil production by supplying highly soluble phosphorus and potassium during the bloom phase.
- ✔ Flower enhancer designed for use during the blooming stage
- ✔ Provides soluble phosphorus and potassium for flowering plants
- ✔ Supports improved flower mass and overall bloom development
- ✔ Suitable for growers looking to strengthen a bloom feeding programme
- ✔ Available in 5L and 20L sizes to suit different grow scales
- ✔ Ideal for use alongside your regular base nutrients and bloom boosters
Superthrive Vitamin and Hormone Plant Additive
Price range: £15.00 through £249.00 incl. Vat
Superthrive is a well-known vitamin and hormone plant additive designed to support healthier growth, help plants recover from stress and provide a useful boost across a wide range of growing situations.
- ✔ Concentrated liquid formula that goes a long way
- ✔ Ideal as a plant pick me up during periods of stress or transplanting
- ✔ Suitable for house plants, vegetables, trees and flowers
- ✔ Can be used to support both vegetative growth and flowering programmes
- ✔ Available in 120ml, 480ml, 960ml, 3.8l and 9.5l sizes
- ✔ Popular plant health additive for routine care and recovery support
House and Garden Amino Treatment Growth Booster
Price range: £35.00 through £80.00 incl. Vat
House and Garden Amino Treatment is a plant growth and flowering booster designed to support stronger development through both vegetative growth and bloom. Used alongside a regular feeding programme, it helps growers encourage healthier foliage, stem strength, root activity and improved fruit quality, with 250ml and 1L bottle options available.
- ✔ Supports vigorous plant growth and productive flowering
- ✔ Helps promote balanced foliage distribution and stronger plant structure
- ✔ Encourages active photosynthesis and improved stem development
- ✔ Supports healthy root activity during key growth stages
- ✔ Aims to assist fruit production and sugar development
- ✔ Available in 250ml and 1L bottle sizes to suit different grow setups
Budlink Silicon Supplement for Plant Growth | 1L and 5L
Price range: £20.00 through £59.00 incl. Vat
BudLink is a highly soluble silica-based nutrient supplement designed to support stronger plant development, better nutrient uptake and improved crop structure throughout both vegetative growth and flowering. Available in 1L and 5L sizes, it is a practical addition to a wide range of feeding programmes.
- ✔ Highly soluble source of silicon for routine nutrient programmes
- ✔ Helps support stronger plant structure and improved cell development
- ✔ Assists more efficient uptake of nutrients
- ✔ Helps reduce moisture loss during active growth
- ✔ Supports plant resilience and natural defence response
- ✔ Available in 1L and 5L options to suit different grow sizes
Advanced Nutrients Big Bud Flowering Enhancer
Price range: £37.50 through £275.00 incl. Vat
Advanced Nutrients Big Bud is a popular flowering enhancer designed for use during the middle stages of bloom, helping growers support plants during peak flower development. Available in 1L, 4L and 10L sizes, it is suitable for growers who need a reliable bloom booster for small or larger feed programmes.
- ✔ Popular flowering enhancer for the middle stage of bloom
- ✔ Recommended application rate of 2ml per litre
- ✔ Designed to complement a wider flowering feed programme
- ✔ Suitable for growers looking to support bloom development
- ✔ Available in 1L, 4L and 10L options
- ✔ Ideal for use within hydroponic and horticultural nutrient schedules
Advanced Nutrients Overdrive Flowering Enhancer
Price range: £37.50 through £275.00 incl. Vat
Advanced Nutrients Overdrive is a late-flowering enhancer designed to be used during the final stage of bloom as part of your existing nutrient schedule. Available in 1L, 4L and 10L sizes, it is a practical choice for growers wanting a straightforward end-of-bloom additive for hydroponic and general horticultural feeding programmes.
- ✔ Flowering enhancer for the final stages of bloom
- ✔ Recommended application rate of 2ml per litre
- ✔ Designed to work alongside your core bloom nutrient schedule
- ✔ Suitable for hydroponic and general indoor horticultural use
- ✔ Available in 1L, 4L and 10L bottle options
- ✔ Useful for growers following a structured late-bloom feeding programme
Rox Flower Enhancer 1L
£85.00 incl. Vat
Rox Flower Enhancer 1L is a flowering nutrient supplement formulated to support blooming plants during the mid-flowering stage, helping improve flower development, crop quality and overall finish.
- ✔ Designed to enhance flowering in blooming plants
- ✔ Best used from day 21 to 24 of flowering and up to day 35
- ✔ Suitable for both recirculating and run to waste systems
- ✔ Recommended dose for recirculating systems: 3ml per litre
- ✔ Recommended dose for run to waste systems: 5ml per litre
- ✔ Supplied in a 1L bottle for straightforward measuring and use
B’Cuzz Soil Booster 1L
£21.00 incl. Vat
B'Cuzz Soil Booster 1L is a soil-specific plant booster designed to support healthy substrate life, stronger root development and improved nutrient availability throughout the growing stage.
- ✔ Formulated especially for cultivation in soil
- ✔ Helps support beneficial micro-organisms and bacteria in the root zone
- ✔ Encourages a more balanced and biologically active substrate
- ✔ Contains essential chelated micro-nutrients to help reduce deficiency risk
- ✔ Supports root system development from the growing phase onwards
- ✔ Suitable for daily use during the growing stage as part of your feed routine
B’Cuzz Coco Booster 1L
£21.00 incl. Vat
B'Cuzz Coco Booster 1L is formulated for growers using coco substrates who want to support strong root development, better substrate balance and reliable micronutrient availability throughout the growing cycle.
- ✔ Specially composed for cultivation in coco
- ✔ Helps encourage beneficial micro-organisms and bacteria in the root zone
- ✔ Supports biological balance and stability in the substrate
- ✔ Contains essential chelated micro-nutrients to help reduce deficiencies
- ✔ Promotes healthy root system development from the growing phase onwards
- ✔ Suitable for daily use in the nutrient solution during the growing stage
Plant Magic Boosting Powder Sachet Box of 5
£29.50 incl. Vat
Plant Magic Boosting Powder is a PK bloom booster designed for use once flower sites are established and fruits begin to form, helping support continued flowering performance through the later stages of bloom.
- ✔ PK booster formulated for the flowering and fruiting stage
- ✔ Encourages a stronger second flowering response
- ✔ Supports improved yields, fruit density and aroma
- ✔ Best used after flower sites are established and fruits start to form
- ✔ Convenient sachet format for straightforward feeding routines
- ✔ Supplied as a box of 5 sachets
What Are Bloom Boosters?
Bloom boosters are additives used during the flowering stage of plant growth to support flower development and help improve overall plant performance. They are used alongside base nutrients rather than instead of them, forming part of a more complete flowering feed programme.
These products are especially popular with indoor growers who want to optimise their results during the final stages of the plant cycle.
Why Use Bloom Boosters?
Bloom boosters are designed to support plants when their nutritional needs change during flowering.
- Supports healthy flower development
- Works alongside bloom nutrients and base feed
- Helps growers fine-tune their flowering programme
- Useful in soil, coco and hydroponic systems
- Supports stronger overall flowering performance
When used correctly, bloom boosters can help make a flowering programme more targeted and effective.
When to Use Bloom Boosters
Bloom boosters are usually introduced once plants move from vegetative growth into flowering. At this stage, many growers adjust their feed schedule to reflect the plant’s changing needs and add flowering-specific products to support development.
For best results, bloom boosters should be used with a balanced nutrient programme and a stable indoor environment.
Bloom Boosters and Feeding Programmes
Bloom boosters are commonly used alongside:
- Base nutrients for the main feeding programme
- Growth boosters used earlier in the cycle
- Beneficial products to support plant health and root performance
- pH management products to keep nutrient solution balanced
Together, these products help create a more complete and better-controlled feeding strategy.
Bloom Boosters and Growing Systems
Bloom boosters can be used across a wide range of indoor growing environments, including:
This makes them a flexible option for many different flowering setups.
Who Are Bloom Boosters Best For?
Bloom boosters are useful for growers who want to improve the performance of their flowering stage and get more from their indoor setup. They are especially helpful for growers following a staged nutrient programme and looking to fine-tune their results.
They are often used by both intermediate and advanced growers, but beginners can also benefit from them when used as part of a simple and well-balanced feed schedule.
Helpful Guides for Flowering and Plant Nutrition
If you want to learn more about feeding and plant nutrition, explore our guides:
- The Ultimate Guide to Understanding Plant Nutrient Needs
- Understanding the Role of Nutrients in Hydroponic Gardening
- The Role of pH and EC in Maintaining Plant Health in Hydroponic Systems
These guides will help you build a more effective flowering feed programme and maintain plant health throughout the cycle.
Shop Bloom Boosters in the UK
At Acorn Horticulture, we stock bloom boosters for indoor growers across the UK. Whether you want to strengthen your flowering programme, support plant performance or complement your base nutrients, our range is designed to help you get more from the flowering stage.
Browse our full range above to find the right bloom booster for your setup.
FAQs
What is a bloom booster?
A bloom booster is an additive used during flowering to support flower development alongside a base nutrient programme.
Do I use bloom boosters instead of base nutrients?
No, bloom boosters are normally used in addition to your regular bloom or base nutrient feed.
Can bloom boosters be used in coco and hydroponics?
Yes, many bloom boosters are suitable for coco, soil and hydroponic feeding systems.
When should I start using bloom boosters?
They are usually introduced when plants enter the flowering stage and their feed schedule changes.
