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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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  • Field Marshal - Flower Bomb (Weight Gainer)

    Field Marshal - Flower Bomb (Weight Gainer)

    Sale

    Field Marshal - Flower Bomb (Weight Gainer)

    Regular price From £6.95 GBP
    Regular price £115.00 GBP Sale price From £6.95 GBP
    Unit price /  per 
    Sale
  • Essentials Lab pH+ & pH- pH Up & Down

    Essentials Lab pH+ & pH- pH Up & Down

    Essentials Lab pH+ & pH- pH Up & Down

    Regular price From £4.95 GBP
    Regular price Sale price From £4.95 GBP
    Unit price /  per 
  • OCD - DEO Max Orange Gel - 1 Litre

    OCD - DEO Max Gels - 1L (Odour Control)

    OCD - DEO Max Gels - 1L (Odour Control)

    Regular price £15.99 GBP
    Regular price Sale price £15.99 GBP
    Unit price /  per 
  • Canna - Boost Accelerator - Flowering Booster - 1 Litre

    Canna - Boost Accelerator - Flowering Booster

    Sale

    Canna - Boost Accelerator - Flowering Booster

    Regular price From £59.95 GBP
    Regular price £79.99 GBP Sale price From £59.95 GBP
    Unit price /  per 
    Sale
  • Intense Nutrients - PK Phite - 1 Litre

    Intense Nutrients - PK Phite (PK Booster)

    Intense Nutrients - PK Phite (PK Booster)

    Regular price From £6.95 GBP
    Regular price Sale price From £6.95 GBP
    Unit price /  per 
  • ROOT NURSE POTKING Fabric Plant Pots: x5 Packs 1L-30L Durable & Reusable

    ROOT NURSE POTKING Fabric Plant Pots: x5 Packs 1L-30L Durable & Reusable

    Sale

    ROOT NURSE POTKING Fabric Plant Pots: x5 Packs 1L-30L Durable & Reusable

    Regular price From £4.40 GBP
    Regular price £6.25 GBP Sale price From £4.40 GBP
    Unit price /  per 
    Sale
  • Boveda - Humidity Control: 62%

    Boveda - Humidity Control: 62%

    Boveda - Humidity Control: 62%

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
    Unit price /  per 
  • Superthrive - The Original Vitamin Solution for plants

    Superthrive - The Original Vitamin Solution for plants

    Superthrive - The Original Vitamin Solution for plants

    Regular price From £14.50 GBP
    Regular price Sale price From £14.50 GBP
    Unit price /  per 
  • RAM - Combi-Duct: Lightproof Ducting

    RAM - Combi-Duct: Lightproof Ducting

    Sale

    RAM - Combi-Duct: Lightproof Ducting

    Regular price From £10.00 GBP
    Regular price £15.00 GBP Sale price From £10.00 GBP
    Unit price /  per 
    Sale
  • Intense Nutrients - Foundation - 1 Litre

    Intense Nutrients - Foundation (Root Stimulant)

    Intense Nutrients - Foundation (Root Stimulant)

    Regular price From £11.95 GBP
    Regular price Sale price From £11.95 GBP
    Unit price /  per 
  • Atami - Worm Delight - Worm Casting Substrate Additive - 20 Litres

    Atami - Worm Delight (20L)

    Sale

    Atami - Worm Delight (20L)

    Regular price £9.00 GBP
    Regular price £13.00 GBP Sale price £9.00 GBP
    Unit price /  per 
    Sale
  • Canna - PK 13/14 - 1 Litre

    Canna - PK 13/14 (PK Booster)

    Sale

    Canna - PK 13/14 (PK Booster)

    Regular price From £9.95 GBP
    Regular price £60.00 GBP Sale price From £9.95 GBP
    Unit price /  per 
    Sale
  • Essentials LAB - pH Meter (With Memory Function)

    Essentials LAB - pH Meter (With Memory Function)

    Essentials LAB - pH Meter (With Memory Function)

    Regular price £44.95 GBP
    Regular price Sale price £44.95 GBP
    Unit price /  per 
  • Adhesive Tape

    Adhesive Tape

    Adhesive Tape

    Regular price From £7.50 GBP
    Regular price Sale price From £7.50 GBP
    Unit price /  per 
  • Advanced Nutrients - Bud Candy - Flowering Booster - 1 Litre

    Advanced Nutrients - Bud Candy® - Flower Booster

    Sale

    Advanced Nutrients - Bud Candy® - Flower Booster

    Regular price From £37.95 GBP
    Regular price £44.99 GBP Sale price From £37.95 GBP
    Unit price /  per 
    Sale
  • Digital Series Indoor/Outdoor Min Max Hygrometer

    Digital Series Indoor/Outdoor Min Max Hygrometer

    Digital Series Indoor/Outdoor Min Max Hygrometer

    Regular price £10.55 GBP
    Regular price Sale price £10.55 GBP
    Unit price /  per 
  • House & Garden - Bud XL (Flowering Booster)

    House & Garden - Bud XL (Flowering Booster)

    House & Garden - Bud XL (Flowering Booster)

    Regular price From £29.99 GBP
    Regular price Sale price From £29.99 GBP
    Unit price /  per 
  • intense Nutrients - Down 'n' Dirty (PH Down)

    intense Nutrients - Down 'n' Dirty (PH Down)

    intense Nutrients - Down 'n' Dirty (PH Down)

    Regular price From £8.95 GBP
    Regular price Sale price From £8.95 GBP
    Unit price /  per 
  • MountainAir Carbon Filters (Various Sizes)

    MountainAir Carbon Filters (Various Sizes)

    Sale

    MountainAir Carbon Filters (Various Sizes)

    Regular price From £98.00 GBP
    Regular price £236.00 GBP Sale price From £98.00 GBP
    Unit price /  per 
    Sale
  • Intense Nutrients - Silicon Ultra - 250ml

    Intense Nutrients - Silicon Ultra - Pro Series

    Intense Nutrients - Silicon Ultra - Pro Series

    Regular price From £54.95 GBP
    Regular price Sale price From £54.95 GBP
    Unit price /  per 
  • AC Infinity - Cloudray - Black 6 inch Clip on Fan for Growing Environments

    AC Infinity - Cloudray - S6 Grow Tent Circulator Clip Fan 6” Auto Oscillation

    AC Infinity - Cloudray - S6 Grow Tent Circulator Clip Fan 6” Auto Oscillation

    Regular price £59.99 GBP
    Regular price Sale price £59.99 GBP
    Unit price /  per 
  • Insecto - Smoke Bomb (Pest Control)

    Insecto - Smoke Bomb (Pest Control)

    Insecto - Smoke Bomb (Pest Control)

    Regular price From £5.49 GBP
    Regular price Sale price From £5.49 GBP
    Unit price /  per 
  • RAM - Quick Release Ducting Clip

    RAM - Quick Release Ducting Clip

    RAM - Quick Release Ducting Clip

    Regular price From £2.49 GBP
    Regular price Sale price From £2.49 GBP
    Unit price /  per 
  • Advanced Nutrients - Bud Ignitor - 500ml

    Advanced Nutrients - Bud Ignitor® - Bloom Stimulator

    Sale

    Advanced Nutrients - Bud Ignitor® - Bloom Stimulator

    Regular price From £39.98 GBP
    Regular price £89.95 GBP Sale price From £39.98 GBP
    Unit price /  per 
    Sale
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