Best Bloom Booster: SHOGUN Sumo Boost vs the Leading Brands
Want bigger, denser flowers without paying over the odds for them?
Choosing the best bloom booster isn't just about results. It's about what every litre of feed costs you, week after week, grow after grow.
We've put SHOGUN Sumo Boost up against the typical leading bloom boosters on the market. Same job, very different price per litre.
What Is a Bloom Booster?
A bloom booster (you'll also hear flower booster or bud booster) is an additive you use alongside your base nutrients during the flowering stage. Your base feed covers the essentials. A booster pushes your plants to put more energy into flowers and fruit.
There are two main types:
- Bloom stimulators like SHOGUN Sumo Boost: these drive your plant's metabolism, photosynthesis and nutrient uptake so it flowers harder.
- PK boosters like SHOGUN PK Warrior 9/18: these add extra phosphorus and potassium, the two elements plants crave most in bloom.
Many growers use one of each for the best results.
The Quick Verdict
Most leading bloom boosters perform well. Growers rate them highly, and so do we. The big difference is cost.
- Lower dose: SHOGUN Sumo Boost is used at just 1 to 2ml per litre.
- Lower bottle price: £34.95 a litre, against £39 to £85 for most leading brands.
- Lower cost per litre: 3.5p to 7p per litre of mixed feed, against around 8p to 16p for a typical leading booster.
Put simply, you get the same kind of flowering boost for a fraction of the running cost.
SHOGUN Sumo Boost vs a Leading Bloom Booster
| SHOGUN Sumo Boost / Active Boost | Typical leading bloom booster | |
|---|---|---|
| Price per 1L bottle | £34.95 | £39 to £85 |
| Dose | 1 to 2ml per litre | 0.5 to 4ml per litre |
| Cost per litre of mixed feed | 3.5p to 7p | 8p to 16p at typical doses |
| Tank-stable option | Yes: Sumo Active Boost | Varies by brand |
What It Costs You Over a Full Grow
Here's what that difference looks like in a real grow room, based on an 8 week flowering period.
Small setup: 50 litre tank, changed weekly
That's 400 litres of feed per grow, using 1 litre bottles.
- SHOGUN Sumo Boost: £13.98 to £27.96 per grow
- Typical leading booster: £32 to £64 per grow
Run 5 grows a year and SHOGUN costs you £69.90 to £139.80. A typical leading booster costs £160 to £320.
Bigger setup: 400 litre tank, changed weekly
That's 3,200 litres of feed per grow, using 5 litre bottles.
- SHOGUN Sumo Boost: £83.17 to £166.34 per grow
- Typical leading booster: £173 to £326 per grow
Over 5 grows a year, that's a saving of hundreds of pounds without changing anything else in your feed.
Bigger Bottles, Lower Cost per Litre
The more you buy, the less every litre of feed costs. Here's SHOGUN Sumo Boost by bottle size at RRP:
| Bottle size | RRP | Cost per litre of mixed feed |
|---|---|---|
| 250ml | £14.95 | 6p to 12p |
| 1 litre | £34.95 | 3.5p to 7p |
| 5 litre | £129.95 | 2.6p to 5.2p |
| 10 litre | £199.95 | 2p to 4p |
| 25 litre | £419.95 | 1.7p to 3.4p |
Even the smallest bottle sits within the typical range of the leading brands. Every size from 1 litre up costs less.
Sumo Boost or Sumo Active Boost: Which Do I Need?
Both share the same core formula. The difference is how you water.
SHOGUN Sumo Boost is for hand watering. If you mix fresh feed each time you water, this is the one for you.
SHOGUN Sumo Active Boost is built for tanks and recirculating hydro systems. It stays stable in solution for up to 14 days and won't ferment, froth or block your drippers. It contains triacontanol, which drives photosynthesis, nutrient uptake and flower development.
Not sure which suits your setup? Ask us. That's what we're here for.
How to Use SHOGUN Sumo Boost
- Shake the bottle well before use.
- Add 1 to 2ml per litre to your nutrient solution during flowering.
- Top up with your base nutrient until you reach your target EC.
- Feed from early bloom right through to harvest.
- For a foliar spray, use 2ml per litre during early flowering.
Top tip: for the best results, SHOGUN recommends pairing Sumo Boost with SHOGUN PK Warrior 9/18 and SHOGUN Geisha.
What Growers Say
- "Excellent works very well," Neil L.
- "Made a noticeable difference and the formation of my flowers were solid and dense with a really nice appearance," Ed.
- "Best I have used in 25 years," Chilli L.
Bloom Booster FAQs
When should I start using a bloom booster?
SHOGUN Sumo Boost goes in from early bloom and stays in until harvest. Always check the label of the product you're using, as some boosters are made for specific weeks of flowering.
Do I still need a PK booster?
A bloom stimulator and a PK booster do different jobs. Sumo Boost drives flowering, while a PK booster like PK Warrior 9/18 supplies extra phosphorus and potassium. Using both covers all bases.
Can I use a bloom booster in soil or coco?
Yes. SHOGUN Sumo Boost and Sumo Active Boost work in soil, coco and hydro.
Will more booster give me bigger flowers?
No. Stick to the recommended dose. More isn't better, and overfeeding wastes money and can stress your plants.
Ready to Boost Your Bloom?
The best bloom booster is the one that delivers results without draining your wallet every grow. SHOGUN Sumo Boost does exactly that.
Order online for free UK delivery over £99. Every parcel arrives in plain, unbranded packaging, and payments show as GWHP. Prefer to pick up? Use Click & Collect, or pop into your local GroWell shop and chat to the team about your setup.
