Bloom Yellow Bottles - Pre

Bloom Yellow Bottles PRE is a concentrated vegetative growth stimulator and plant branching booster designed to encourage shorter internodal spacing, stronger stems and increased lateral branching. Part of the Bloom Advanced Floriculture nutrient range, PRE helps growers develop compact, bushy plants with more potential flowering sites before the bloom stage begins. Formulated using natural plant extracts, kelp-derived compounds, humic substances and vitamin B1, it supports vigorous vegetative development while helping growers make more effective use of their available growing space.

By encouraging plants to develop outward rather than concentrating growth into a single tall main stem, Bloom PRE is particularly useful for SCROG (Screen of Green) cultivation, canopy management and indoor growing environments where plant height needs to be controlled. Its highly concentrated formula is suitable for hydroponics, coco coir and soil, making it a versatile addition to a balanced vegetative feeding programme.

Key Features

• Concentrated vegetative growth booster designed to encourage compact, vigorous plant development
• Promotes shorter internodal spacing, helping produce stockier plants with reduced vertical stretch
• Encourages increased lateral branching and the development of additional potential flowering sites
• Supports thicker main stems and stronger branches during vegetative growth
• Helps encourage broader, darker green foliage for improved canopy development
• Ideal for SCROG growing, canopy training and managing plant height in restricted spaces
• Contains natural plant-derived ingredients, including kelp extracts, humic substances and vitamin B1
• Includes amino acids and other plant-supporting compounds as part of its concentrated formulation
• Designed for use during the vegetative growth stage, before plants enter flowering
• Generally applied at 1ml per litre, with specific rates depending on the growing system
• Suitable for soil, coco coir and hydroponic growing systems
• Compatible with recirculating irrigation, run-to-waste systems and conventional soil watering
• Can be used alongside the Bloom Advanced Floriculture base nutrient range without automatically reducing the normal base nutrient dosage
• Suitable for indoor and outdoor cultivation, including grow tents, greenhouses and commercial growing areas
• Manufactured in Australia by Agricultural Organics
• Available in 300ml, 1L, 2.5L, 15L and 25L sizes

Specifications

Who It’s For

Bloom Yellow Bottles PRE is ideal for growers who want to develop shorter, bushier plants with strong stems, improved branching and a more evenly distributed canopy before flowering begins. It is particularly useful for hydroponic growers, coco cultivators and soil gardeners using SCROG techniques or managing crops in a grow tent with limited vertical space. Growers aiming to maximise the number of potential flowering sites across an indoor canopy can incorporate PRE into their vegetative nutrient programme to help establish a more productive plant structure before switching to bloom nutrients.

How To Use

Use Bloom Yellow Bottles PRE during the vegetative growth stage as part of your normal nutrient feeding programme. For general applications, the manufacturer recommends approximately 1ml per litre of prepared nutrient solution, although the correct concentration depends on the growing medium and irrigation method. Use 0.5ml per litre for soil and recirculating hydroponic systems, 1ml per litre for run-to-waste systems, or 0.5–1ml per litre for organic growing applications.

For a typical four-week vegetative cycle, apply PRE during weeks 2 and 3, then discontinue use during week 4 before switching to the flowering stage. This allows the product to support branching and compact growth while plants are actively developing their vegetative structure. Adjust the timing proportionally for different growing schedules, following the appropriate Bloom feeding chart.

Measure the required quantity of Bloom PRE and add it to your prepared water or nutrient solution, mixing thoroughly before application. Continue using your normal base nutrients according to the manufacturer's feeding schedule, and check the final pH and EC before feeding. Apply through the appropriate irrigation or watering system and monitor plant development throughout the treatment period. For growers following the complete Bloom Advanced Floriculture feeding programme, PRE is used before the flowering-stage additives, including Bloom ULTRA.

As Bloom PRE contains ingredients derived from natural sources, some variation in product colour and consistency may occur between batches.

All orders are packed in plain discreet parcels with non descript labels for your personal security.

We offer the following shipping options to the mainland UK. If you live outside mainland UK please call us on +44 (0)1142 280024.

Royal Mail delivery options (mainland UK)

Royal mail tracked  £4.75 (up to 2KG only) 2-4 working days

Royal mail tracked  £3.75 (up to 2KG only) 3-5 working days

Courier  Delivery service options (mainland) Zone A Zone A+ Zone B Zone B+

Free delivery up to 25 kilos (over £99) 1-2 working days service 
Next working day  £6.75 up to 25KG 
Next working day am £9.95 over 25KG

Courier Delivery service options Zone C Zone C+ Zone D Zone D+

Next working day  £29.95 + 75P per kg over 25KG
Next working day am £35 + 75P per KG over 25KG

All packages are shipped in plain, discrete packaging. Absolutely NO information is passed to third parties.

Please note that paid for next day delivery only applies if you order before 1PM Monday to Thursday.

Our UK delivery zones: In the UK we have 4 zones. Prices and parcel delivery times vary by zone.


Tracking your consignments

Our deliveries are handled by Parcelforce or DX or Fedex depending on the weight and location.You are able to track your parcels by using your consignment number or customer reference and postcode. If using a reference number to search, please also insert the delivery postcode. You will receive an email on the day for dispatch confirming your order and tracking number, You have the option to select a delivery window or change the day of delivery by clicking the link below and manage my delivery option.


Other Services Available

Isle of Wight & isles of Scilly £5.99 extra per consignment

Timed booked delivery £15.99 extra per consignment

Long bulky items £29.99 extra per consignment (1.4m x 0.8m 0r two persons needs to carry )

We Won't Be Beaten On Price

At Hytec Horticulture we are committed to offering the best range of hydroponic products at the best possible prices. This is why we have our Price Match Promise, whereby if you find an identical product at one of our competitors for a lower price, we will match or even beat it.

In an ever-increasingly competitive marketplace, many product lines are being sold at varying prices. We want to give you the best deal so if you find any of the products we sell (or comparable products) at cheaper prices, give us a chance to get your business, save you money, and beat that price. 

Terms & Conditions

To qualify for the Price Match Promise, the product must conform to the following:

• The product in question must be identical (it should be the same brand & model and for sale with the same terms & conditions)
• The product must be held in stock by the competitor at the time you want to make the price match
• In addition to the above, we must also have the product in stock
• We must be able to verify the lower price either by the store's website, a phone call or a written quote on headed paper
• The product is not part of a promotion, sale or clearance offer
• The product must be available from a physical store that’s open to the public
• Our Price Match Promise is not available against web-only retailers, for example, eBay or Amazon, along with factory outlets, private or liquidation sales
• Typographical errors, incorrect pricing, voucher codes or additional discounts by the competitor, including their own price match offers, are excluded 

Large & Multiple Product Orders

If you want to place a large order with multiple products (for example, you're setting up a grow room from scratch and require a full setup including tent, lights, extraction, nutrients, grow media etc) then get in touch and we will aim to match, or even beat any quotes you’ve been given.