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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
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  • Growth Technology - Clonex (50m) (Cloning Hormones) Growth Technology - Clonex (50m) (Cloning Hormones)

    Growth Technology - Clonex (50m) (Cloning Hormones)

    Sale

    Growth Technology - Clonex (50m) (Cloning Hormones)

    Regular price £8.49 GBP
    Regular price £12.00 GBP Sale price £8.49 GBP
    Sale
  • Intense Nutrients - Foundation - 1 Litre Intense Nutrients - Foundation (Root Stimulant)

    Intense Nutrients - Foundation (Root Stimulant)

    Intense Nutrients - Foundation (Root Stimulant)

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
  • Canna - Rhizotonic - 1 Litre Canna - Rhizotonic - Root Stimulator

    Canna - Rhizotonic - Root Stimulator

    Sale

    Canna - Rhizotonic - Root Stimulator

    Regular price From £2.50 GBP
    Regular price £39.99 GBP Sale price From £2.50 GBP
    Sale
  • Intense Nutrients - OG Granules - 350g Intense Nutrients - OG Granules - 700g

    Intense Nutrients - OG Granules (Mycorrhizals)

    Intense Nutrients - OG Granules (Mycorrhizals)

    Regular price From £16.95 GBP
    Regular price Sale price From £16.95 GBP
  • Shogun - Zenzym - 1 Litre Shogun - Zenzym (Enzymes)

    Shogun - Zenzym (Enzymes)

    Shogun - Zenzym (Enzymes)

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
  • Advanced Nutrients - Voodoo Juice® - (Root Mass Expanders) Advanced Nutrients - Voodoo Juice® - (Root Mass Expanders)

    Advanced Nutrients - Voodoo Juice® - (Root Mass Expanders)

    Advanced Nutrients - Voodoo Juice® - (Root Mass Expanders)

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
  • Shogun - Katana Roots - 1 Litre Shogun - Katana Roots (Root Stimulant)

    Shogun - Katana Roots (Root Stimulant)

    Shogun - Katana Roots (Root Stimulant)

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
  • Advanced Nutrients - B-52® - Powerful B-Vitamin (Bud and Stalk Strengthener) Advanced Nutrients - B-52® - Powerful B-Vitamin (Bud and Stalk Strengthener)

    Advanced Nutrients - B-52® - Powerful B-Vitamin (Bud and Stalk Strengthener)

    Sale

    Advanced Nutrients - B-52® - Powerful B-Vitamin (Bud and Stalk Strengthener)

    Regular price From £19.95 GBP
    Regular price £27.99 GBP Sale price From £19.95 GBP
    Sale
  • House and Garden - Root Excelurator (Root Development) House and Garden - Root Excelurator (Root Development)

    House and Garden - Root Excelurator (Root Development)

    Sold out

    House and Garden - Root Excelurator (Root Development)

    Regular price From £39.99 GBP
    Regular price £145.00 GBP Sale price From £39.99 GBP
    Sold out
  • Advanced Nutrients - Tarantula (Root Mass Expanders)

    Advanced Nutrients - Tarantula (Root Mass Expanders)

    Advanced Nutrients - Tarantula (Root Mass Expanders)

    Regular price £85.49 GBP
    Regular price Sale price £85.49 GBP
  • Intense Nutrients - Roots Ultra - Pro Series Intense Nutrients - Roots Ultra - Pro Series (Root Stimulant)

    Intense Nutrients - Roots Ultra - Pro Series (Root Stimulant)

    Intense Nutrients - Roots Ultra - Pro Series (Root Stimulant)

    Regular price £34.99 GBP
    Regular price Sale price £34.99 GBP
  • Plant Magic - Root Stimulant - 1 Litre Plant Magic - Root Stimulant

    Plant Magic - Root Stimulant

    Plant Magic - Root Stimulant

    Regular price From £22.95 GBP
    Regular price Sale price From £22.95 GBP
  • Growth Technology - Clonex Pro Start - 3 In 1 Nutrient Growth Technology - Clonex Pro Start - 3 In 1 Nutrient

    Growth Technology - Clonex Pro Start - 3 In 1 Nutrient

    Growth Technology - Clonex Pro Start - 3 In 1 Nutrient

    Regular price From £8.50 GBP
    Regular price Sale price From £8.50 GBP
  • Mills Nutrients - Start-R - Root Enhancer - 5 Litres Mills - Start R (Root Stimulant)

    Mills - Start R (Root Stimulant)

    Sale

    Mills - Start R (Root Stimulant)

    Regular price From £14.95 GBP
    Regular price £18.00 GBP Sale price From £14.95 GBP
    Sale
  • Canna - BioCanna - Bio Rhizotonic - Organic Plant Additive Canna - Bio Rhizotonic - Organic Rooting Stimulator

    Canna - Bio Rhizotonic - Organic Rooting Stimulator

    Canna - Bio Rhizotonic - Organic Rooting Stimulator

    Regular price £49.99 GBP
    Regular price Sale price £49.99 GBP
  • Plagron - Power Roots (Promotes root growth and boosts resistance)

    Plagron - Power Roots (Promotes root growth and boosts resistance)

    Plagron - Power Roots (Promotes root growth and boosts resistance)

    Regular price £21.99 GBP
    Regular price Sale price £21.99 GBP
  • Atami - Rootbasic - Root Stimulant - 500ml Atami - Rootbastic - For ‘Massive’ root production!

    Atami - Rootbastic - For ‘Massive’ root production!

    Sale

    Atami - Rootbastic - For ‘Massive’ root production!

    Regular price £67.99 GBP
    Regular price £91.54 GBP Sale price £67.99 GBP
    Sale
  • Advanced Nutrients PIRANHA Beneficial Fungi Hydroponics Nutrient Additive

    Advanced Nutrients PIRANHA Beneficial Fungi Hydroponics Nutrient Additive

    Sold out

    Advanced Nutrients PIRANHA Beneficial Fungi Hydroponics Nutrient Additive

    Regular price £69.99 GBP
    Regular price £82.35 GBP Sale price £69.99 GBP
    Sold out
  • HydroTops - Bactivator HydroTops - Bactivator

    HydroTops - Bactivator

    Sale

    HydroTops - Bactivator

    Regular price From £2.50 GBP
    Regular price £25.50 GBP Sale price From £2.50 GBP
    Sale
  • Dutch Pro: Take Root - (Root Stimulator)

    Dutch Pro: Take Root - (Root Stimulator)

    Dutch Pro: Take Root - (Root Stimulator)

    Regular price From £59.99 GBP
    Regular price Sale price From £59.99 GBP
  • Gold Roots: For Explosive Root Growth

    Gold Roots: For Explosive Root Growth

    Sold out

    Gold Roots: For Explosive Root Growth

    Regular price £79.95 GBP
    Regular price Sale price £79.95 GBP
    Sold out
  • FloraMax - Root-XS

    FloraMax - Root-XS

    Sold out

    FloraMax - Root-XS

    Regular price £29.99 GBP
    Regular price £40.00 GBP Sale price £29.99 GBP
    Sold out
  • Advanced Nutrients: Voodoo Juice® Plus - Root Mass Expanders

    Advanced Nutrients: Voodoo Juice® Plus - Root Mass Expanders

    Sold out

    Advanced Nutrients: Voodoo Juice® Plus - Root Mass Expanders

    Regular price £64.99 GBP
    Regular price £74.99 GBP Sale price £64.99 GBP
    Sold out
  • Advanced Nutrients - OG Organics™ Ancient Earth®

    Advanced Nutrients - OG Organics™ Ancient Earth®

    Sold out

    Advanced Nutrients - OG Organics™ Ancient Earth®

    Regular price £36.95 GBP
    Regular price £49.99 GBP Sale price £36.95 GBP
    Sold out
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