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We are Proud Stockists of your Favorite Feeds & Additives.

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Black Flag Horticulture
  • Home
  • Bundle Deals
  • Growing Media
    • Coco Substrates
    • Soil Substrates
    • Rockwool & Jiffy Plugs
    • All Growing Media
  • Propagation
    • Propagators
    • Rockwool & Plugs
    • Rooting Agents
  • Environments
    • Propagation Grow Tents
    • Lighthouse Tents
    • Environments Accessories
  • Climate
    • Ducting & Accessories
    • Extraction & Filtering
    • Fans
    • Sheeting
    • Tapes
    • Temperature Control
    • Humidity Control
    • Odour Control
    • Metal Work
  • Lights
    • LED Grow Lights
    • Grow Lights
    • Grow Light Accessories
    • Shop All
  • Nutrients
    • Base Feeds
    • Root Development
    • Veg Boosters
    • Enzymes
    • Mag/Cal
    • Flowering Boosters
    • P.K
    • Plant Finishers
    • pH Regulators
    • Silicon
  • Organics
    • Organic Nutrients
    • Organic Growing Media
    • Organic Plant Additives
  • Irrigation
    • Connectors
    • Pipes
    • Chillers
  • Plant Health
    • Pest & Disease Control
    • Plant Health
  • Pots & Trays
    • Plant Pots
    • Fabric Plant Pots
    • Saucers
  • Tools
    • Tanks & Reservoirs
    • Measuring Tools
    • Plant Support
    • Magical Butter Machine
    • Harvesting
    • Metering & Timers
    • Spray Bottles & Pumpers
    • All Tools & Accessories
  • Catalogue
    • Shop All
    • Brands
    • All Collections
  • Information
    • About Us
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  • Shogun - Zenzym - 1 Litre

    Shogun - Zenzym (Enzymes)

    Shogun - Zenzym (Enzymes)

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
    Unit price /  per 
  • Shogun - Sumo Boost - 1 Litre

    Shogun - Sumo Boost (Flower Booster)

    Sale

    Shogun - Sumo Boost (Flower Booster)

    Regular price From £2.50 GBP
    Regular price £210.00 GBP Sale price From £2.50 GBP
    Unit price /  per 
    Sale
  • Shogun - Samurai Coco A&B Set - 1 Litre

    Shogun - Samurai Coco (A & B Set) (Base Feed)

    Shogun - Samurai Coco (A & B Set) (Base Feed)

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
    Unit price /  per 
  • Atami - Janeco-Lightmix - 50 Litres

    Atami - Janeco-Lightmix - 50 Litres

    Sale

    Atami - Janeco-Lightmix - 50 Litres

    Regular price £12.95 GBP
    Regular price £15.00 GBP Sale price £12.95 GBP
    Unit price /  per 
    Sale
  • RAM - Ultrasonic Humidifier

    RAM - Ultrasonic Humidifier

    RAM - Ultrasonic Humidifier

    Regular price From £39.99 GBP
    Regular price Sale price From £39.99 GBP
    Unit price /  per 
  • Metal Work - Female Coupling

    Metal Work - Female Coupling

    Metal Work - Female Coupling

    Regular price From £1.30 GBP
    Regular price Sale price From £1.30 GBP
    Unit price /  per 
  • Advanced Nutrients - OverDrive - 500ml

    Advanced Nutrients - Overdrive® - Finisher/Ripener

    Sale

    Advanced Nutrients - Overdrive® - Finisher/Ripener

    Regular price From £2.50 GBP
    Regular price £28.95 GBP Sale price From £2.50 GBP
    Unit price /  per 
    Sale
  • Ecothrive Neutralise - The Tap Water Dechlorinator

    Ecothrive Neutralise - The Tap Water Dechlorinator

    Ecothrive Neutralise - The Tap Water Dechlorinator

    Regular price From £19.95 GBP
    Regular price Sale price From £19.95 GBP
    Unit price /  per 
  • Gold Label - Hydro/Coco 60/40 Mix - RHP Certified for Hydroponics

    Gold Label - Hydro/Coco 60/40 Mix - RHP Certified for Hydroponics

    Sale

    Gold Label - Hydro/Coco 60/40 Mix - RHP Certified for Hydroponics

    Regular price From £1.50 GBP
    Regular price £18.00 GBP Sale price From £1.50 GBP
    Unit price /  per 
    Sale
  • Plant Magic - Coco A&B Set - 1 Litre

    Plant Magic - Coco A&B (Set) (Base Feed)

    Sale

    Plant Magic - Coco A&B (Set) (Base Feed)

    Regular price From £13.95 GBP
    Regular price £15.92 GBP Sale price From £13.95 GBP
    Unit price /  per 
    Sale
  • Plant Magic - Boost - Flowering Booster - 1 Litre

    Plant Magic - Boost (Flower Booster)

    Sale

    Plant Magic - Boost (Flower Booster)

    Regular price From £39.95 GBP
    Regular price £45.99 GBP Sale price From £39.95 GBP
    Unit price /  per 
    Sale
  • Intense Nutrients - Kickstart - 1 Litre

    Intense Nutrients - Kickstart (Propagation)

    Intense Nutrients - Kickstart (Propagation)

    Regular price From £9.99 GBP
    Regular price Sale price From £9.99 GBP
    Unit price /  per 
  • Metal Work - Square Wall Flange

    Metal Work - Square Wall Flange

    Metal Work - Square Wall Flange

    Regular price From £5.20 GBP
    Regular price Sale price From £5.20 GBP
    Unit price /  per 
  • Advanced Nutrients - Sensi Coco Bloom - A&B Set - 1 Litre - Coco Base Feed

    Advanced Nutrients - Sensi Coco: Bloom (A & B Set) - pH Perfect®

    Sale

    Advanced Nutrients - Sensi Coco: Bloom (A & B Set) - pH Perfect®

    Regular price From £2.50 GBP
    Regular price £28.95 GBP Sale price From £2.50 GBP
    Unit price /  per 
    Sale
  • Intense Nutrients - PK Ultra - Pro Series

    Intense Nutrients - PK Ultra -Pro Series (PK Booster)

    Intense Nutrients - PK Ultra -Pro Series (PK Booster)

    Regular price From £34.95 GBP
    Regular price Sale price From £34.95 GBP
    Unit price /  per 
  • Advanced Nutrients - Big Bud Coco

    Advanced Nutrients - Big Bud® - Coco - Bloom Booster

    Sale

    Advanced Nutrients - Big Bud® - Coco - Bloom Booster

    Regular price From £2.50 GBP
    Regular price £43.95 GBP Sale price From £2.50 GBP
    Unit price /  per 
    Sale
  • Garland - XL High Dome Unpackaged Black Propagator 58cm x 40.5cm x 22.5cm - Unheated

    Garland - XL High Dome Unpackaged Black Propagator 58cm x 40.5cm x 22.5cm - Unheated

    Garland - XL High Dome Unpackaged Black Propagator 58cm x 40.5cm x 22.5cm - Unheated

    Regular price £18.00 GBP
    Regular price Sale price £18.00 GBP
    Unit price /  per 
  • Bluelab - V2 Truncheon CF/EC/PPM Meter

    Bluelab - V2 Truncheon CF/EC/PPM Meter

    Bluelab - V2 Truncheon CF/EC/PPM Meter

    Regular price £83.04 GBP
    Regular price Sale price £83.04 GBP
    Unit price /  per 
  • OCD - DEO Max Fresh Linen Spray - 30ml

    OCD - DEO Max Spray - 30ml (Odour Control)

    OCD - DEO Max Spray - 30ml (Odour Control)

    Regular price £6.94 GBP
    Regular price Sale price £6.94 GBP
    Unit price /  per 
  • Metal Work - Y Piece

    Metal Work - Y Piece

    Metal Work - Y Piece

    Regular price From £9.90 GBP
    Regular price Sale price From £9.90 GBP
    Unit price /  per 
  • Bamboo Stakes, Gardening Tools

    Bamboo Stakes

    Bamboo Stakes

    Regular price From £0.20 GBP
    Regular price Sale price From £0.20 GBP
    Unit price /  per 
  • Great White 100% Organic Rooting Powder Nutrient Mycorrhizae Trichoderma

    Great White 100% Organic Rooting Powder Nutrient Mycorrhizae Trichoderma

    Sale

    Great White 100% Organic Rooting Powder Nutrient Mycorrhizae Trichoderma

    Regular price From £15.99 GBP
    Regular price £259.99 GBP Sale price From £15.99 GBP
    Unit price /  per 
    Sale
  • Advanced Nutrients - CarboLoad - 1 Litre

    Advanced Nutrients - CarboLoad® - Flowering Booster

    Sale

    Advanced Nutrients - CarboLoad® - Flowering Booster

    Regular price From £2.50 GBP
    Regular price £12.00 GBP Sale price From £2.50 GBP
    Unit price /  per 
    Sale
  • Ecofective: Plant Disease Defence

    Ecofective: Plant Disease Defence

    Ecofective: Plant Disease Defence

    Regular price From £7.45 GBP
    Regular price Sale price From £7.45 GBP
    Unit price /  per 
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