Using Plagron Green Sensation correctly will make a real difference to your results. Plagron Green Sensation is one of the most talked-about bloom boosters in indoor growing — and having used it across a wide range of crops and setups, I can say the reputation is well earned. What makes it genuinely different from most boosters is the four-in-one formula: you’re not just getting a PK spike, you’re getting enzyme activity, stress-response triggering, metabolic support, and a flowering stimulator all in one bottle. The result is measurably heavier, denser, more aromatic results in the final weeks of bloom.
What Is Plagron Green Sensation?
Green Sensation is classified as a 4-in-1 flowering booster. Its NPK ratio is 0-9-10 — meaning it delivers a significant phosphorus and potassium boost (9% P and 10% K) alongside its other active components. But the formula goes beyond a standard PK additive.
The four components work together as follows:
- Enzymes: Break down organic matter in the root zone, improving nutrient availability and soil structure
- Enhancers: Boost resistance to disease and environmental stress during the critical late-bloom period
- Metabolic boosters: Accelerate the plant’s internal chemistry to drive flower production and essential oil synthesis
- PK stimulator: Delivers the phosphorus and potassium that flowering plants need to form dense, heavy fruits and flowers
Because Green Sensation already includes a comprehensive PK element, you don’t need to add a separate PK 13/14. Doing so would likely push your plants into nutrient excess and may cause lockout of other essential elements.
Plagron Green Sensation Dosage
The recommended dose is 1ml per litre (10ml per 10 litres). This is consistent throughout the application window — there’s no ramping up or tapering required, which keeps feeding straightforward during an already busy period of the grow.
How to Mix It Correctly
- Shake the bottle vigorously before each use — active compounds can settle
- Add Green Sensation to your water first, before base nutrients
- Then add your base nutrients and any other additives
- Check your EC after mixing — Green Sensation will raise overall electrical conductivity noticeably at 1ml/L
- Adjust pH as needed after the full mix is combined
One important note: Green Sensation also reduces the amount of base nutrients your plants need. Many growers find they can reduce their base nutrient dose by 20–30% when using Green Sensation at full rate — monitor your plants closely in the first week and adjust accordingly.
When to Use Plagron Green Sensation
Start Green Sensation at the beginning of week 4 of the flowering phase and continue applying it at every watering for the remaining 4–6 weeks until your flush period. This window covers the key stages of flower development — from early swelling through to hardening and resin production — which is exactly where Green Sensation has the greatest impact.
Don’t start it earlier than week 4. In the first weeks of bloom, plants are still transitioning from vegetative growth and the high PK content can create an imbalance before the plant is ready to use it effectively.
How Does Green Sensation Work?
One of the more fascinating aspects of Green Sensation is the mechanism behind its effectiveness. The formula is designed to induce a mild, controlled form of osmotic stress at the cellular level. This tricks the plant into retaining more nutrients and organic compounds — essentially entering a preservation response that results in harder, denser flowers with elevated levels of essential oils and aromatic compounds.
It’s a smart approach: rather than simply flooding the plant with PK, it uses a biological trigger to amplify the plant’s own flowering response. This is why growers consistently report better results with Green Sensation compared to straightforward PK boosters at equivalent doses.
Compatible Growing Systems
Plagron Green Sensation is suitable for all substrates and grow systems:
- Soil: The enzyme component is particularly effective in soil, where it actively improves root zone biology and breaks down organic matter
- Coco coir: Apply at every watering — coco requires consistent feeding and responds well to the frequent PK supply
- Hydroponics: Works well in DWC, NFT, and recirculating systems — monitor EC closely as Green Sensation contributes significantly to solution strength
It can also be used alongside nutrients from brands outside the Plagron range — it’s not limited to the Plagron system. Although not certified organic, it is safe to use in organic substrates.
Key Facts
- NPK ratio: 0-9-10 (Phosphorus 9%, Potassium 10%)
- Dose: 1ml per litre / 10ml per 10 litres
- Apply from: Week 4 of flowering to final week before flush
- No additional PK supplement required
- Reduces base nutrient requirement during application
- Available sizes: 250ml, 500ml, 1L, 5L
Frequently Asked Questions
Can I use Plagron Green Sensation with non-Plagron nutrients?
Yes — Green Sensation works alongside any base nutrient brand. It’s not locked to the Plagron system. Just check your EC after combining it with your base feed, as the total strength of your solution will be higher than usual.
Do I still need a PK 13/14 booster?
No. Green Sensation includes a full PK component (P9, K10) that’s specifically designed for the bloom phase. Adding additional PK on top risks pushing plants into nutrient excess, which can cause tip burn, calcium and magnesium lockout, or reduced final quality.
Can I reduce my base nutrients when using Green Sensation?
Yes — this is actually recommended. Green Sensation contributes significantly to EC, and continuing full-strength base nutrients alongside it can push total concentration too high. Start by reducing your base nutrient dose by 20–25% in the first week of Green Sensation use and monitor your plants’ response.
Is Green Sensation suitable for vegetables and fruiting crops?
Absolutely. It works very well for tomatoes, peppers, aubergines, cucumbers, and any other fruiting crops grown under artificial light or in polytunnels. The enzyme activity and metabolic boosters are particularly beneficial for fruit quality and flavour in edible crops.
Where can I buy Plagron Green Sensation in the UK?
We stock the full Plagron nutrients and additives range including Green Sensation in all available sizes. Our team can also help you build a complete Plagron feeding schedule if you’re starting from scratch.
Related Articles
- Nutrients and Additives Guide — complete hub
- How to Use Plagron Promix
Further Reading From The Horticulture Company
For more expert growing guides, our nutrients and additives guide explains how to build an effective feed programme, while our LED grow lights comparison and grow tents guide help you optimise your setup. The indoor growing environment guide covers temperature, humidity and CO₂, and the complete UK grow tent guide takes you through setup from scratch.
For authoritative guidance on plant nutrition and health, the Royal Horticultural Society publishes evidence-based growing advice used by professionals and hobbyists alike. Visit The Horticulture Company’s store in Kenilworth, Warwickshire, or browse our full range of products and guides online.
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