How to Use Cyco B1 Boost

Cyco B1 Boost is a vitamin B1 and humic acid supplement designed to reduce transplant shock and support root development in indoor plants. This guide covers dosing rates and how to use it for the best results in your grow.

Written by Simon

Using Cyco B1 Boost correctly will make a real difference to your results. Cyco B1 Boost is a vitamin-based growth stimulant built around thiamine (Vitamin B1) — one of the most well-established root development and stress-recovery compounds in plant nutrition. I reach for it whenever plants are showing signs of transplant shock, stress from environmental fluctuations, or sluggish root development in the early stages of a grow. Used consistently through veg and into early flower, it produces noticeably larger root systems, more vigorous above-ground growth, and plants that are considerably more resilient when conditions aren’t perfect.

What Does Cyco B1 Boost Do?

The core of B1 Boost is thiamine — a coenzyme that’s directly involved in carbohydrate metabolism within root cells. Roots use thiamine to produce the energy (ATP) needed for active nutrient uptake. When thiamine supply is adequate, roots absorb minerals more efficiently and recover from stress episodes much faster. This is why B1 supplements have been a staple of transplanting protocols and stress-recovery programmes for decades — the science behind them is genuinely solid.

Beyond thiamine, Cyco B1 Boost contains a supporting blend of enzymes and natural plant extracts that further stimulate root development, improve the bioavailability of nutrients in the root zone, and enhance the plant’s natural resilience to external stresses including heat, drought, and disease pressure.

The practical result is plants with more extensive, healthier root systems — and since everything above ground depends on what happens below it, stronger roots consistently translate to better vegetative growth, more productive flowering, and improved overall yields.

Cyco B1 Boost Dosage

The standard dose is 1–2ml per litre of water or nutrient solution. Within this range:

• 1ml per litre: Ideal for routine use throughout veg — consistent supplementation at a maintenance dose
• 2ml per litre: Use at the higher end during transplanting, after stress events (heat, drought, root disturbance), or in the first two weeks after moving plants to a new medium

B1 Boost is not a product that requires ramping up or down — maintain a consistent dose throughout the application window and adjust within the range based on your plants’ needs.

How to Apply Cyco B1 Boost

B1 Boost can be applied in two ways:

Root drench (standard application)

• Add B1 Boost to your prepared nutrient solution at 1–2ml per litre
• Mix thoroughly after adding other nutrients
• Check EC and adjust pH to your target range before feeding
• Apply at every watering throughout the recommended growth stages

Foliar spray

• Mix B1 Boost at 1–2ml per litre in clean, pH-adjusted water (pH 6.0–6.5)
• Apply to the undersides of leaves as well as the top surface — stomata on the lower leaf surface absorb foliar applications most efficiently
• Spray during the lights-off period or in low light to prevent leaf burn
• Foliar application is particularly effective immediately after transplanting or when plants are showing signs of stress

When to Use Cyco B1 Boost

Begin B1 Boost during the early growth stages — from seedling through vegetative growth — and continue into the first 2–3 weeks of flowering. Reduce use and discontinue approximately two weeks before harvest. The early stages of a plant’s life and any periods of stress are where B1 supplementation has the greatest impact, so don’t delay starting it until problems appear — preventative use is far more effective than reactive use.

Key moments where B1 Boost is particularly valuable:

• Transplanting: Apply at 2ml/L on the day of transplant and for the first week after — dramatically reduces transplant shock
• After topping or training: Physical stress from LST, topping, or heavy defoliation — B1 helps plants recover faster
• Environmental stress recovery: After heat stress events, power cuts, or equipment failures, increase to 2ml/L for the following 5–7 days
• New clones / cuttings: Add to the cloning solution or first feeds to establish root development quickly

Compatible Growing Systems

Cyco B1 Boost is compatible with all common growing media and systems:

• Soil and peat-based media: Excellent — the enzyme components also support soil microbial activity
• Coco coir: Works very well — add to every feed during the application window
• Hydroponic systems: Fully water-soluble and compatible with DWC, NFT, and recirculating setups
• Peat moss: Apply via root drench as part of your normal feed routine

It pairs well with most nutrient brands and additives. Because it’s a vitamin and enzyme supplement rather than a high-nutrient additive, it has minimal impact on EC — making it easy to incorporate without recalculating your feed strength significantly.

Suitable Plant Types

B1 Boost works with a wide range of crops grown indoors or outdoors:

• Tomatoes, peppers, aubergines, and other fruiting vegetables
• Herbs including basil, coriander, and mint
• Leafy vegetables and brassicas
• Ornamental flowering plants
• Strawberries and fruiting soft fruits

Frequently Asked Questions

Is Cyco B1 Boost the same as other B1 vitamin supplements?

Cyco B1 Boost contains thiamine (B1) as its primary active compound, as do other B1 supplements on the market. What differentiates Cyco’s formula is the supporting blend of enzymes and natural plant extracts alongside the thiamine, which expands its effectiveness beyond pure vitamin supplementation. The formulation and concentration determine how much active compound reaches root tissue — quality varies significantly between brands.

Can I use Cyco B1 Boost with clones?

Yes — it’s particularly effective during the cloning and early rooting phase. Add it to your cloning solution or to the first feeds once cuttings have rooted. The thiamine content accelerates root development and helps young clones establish faster, which shortens the time from cutting to transplant.

Will B1 Boost significantly raise my EC?

No — because it’s a vitamin and enzyme supplement rather than a macro or micronutrient additive, its contribution to EC is very low. You can add it to your full-strength nutrient solution without significantly adjusting your overall feed strength.

Can I use Cyco B1 Boost alongside other Cyco nutrients?

Yes — B1 Boost integrates into the full Cyco Platinum Series programme and can be used alongside other Cyco additives. It’s also compatible with nutrients from other brands if you’re using it as a standalone stress-recovery or root development supplement.

Where can I buy Cyco B1 Boost in the UK?

We stock Cyco B1 Boost in 1 litre bottles as part of our full range of plant nutrients and additives. If you have questions about how to fit B1 Boost into your existing programme, our team is happy to advise.

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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.