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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
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  • Atami - Worm Delight - Worm Casting Substrate Additive - 20 Litres Atami - Worm Delight (Worm Castings)

    Atami - Worm Delight (Worm Castings)

    Sale

    Atami - Worm Delight (Worm Castings)

    Regular price From £3.20 GBP
    Regular price £4.00 GBP Sale price From £3.20 GBP
    Sale
  • Ona - Gels (400g) (Odour Control) Ona - Gels (400g) (Odour Control)

    Ona - Gels (400g) (Odour Control)

    Ona - Gels (400g) (Odour Control)

    Regular price £10.98 GBP
    Regular price Sale price £10.98 GBP
  • Canna - Aqua Clay Pebbles - 45 Litres Canna AQUA CLAY PEBBLES 5/10/20/45L Decants Premium Hydroponics Growing Media

    Canna AQUA CLAY PEBBLES 5/10/20/45L Decants Premium Hydroponics Growing Media

    Sale

    Canna AQUA CLAY PEBBLES 5/10/20/45L Decants Premium Hydroponics Growing Media

    Regular price From £1.99 GBP
    Regular price £23.72 GBP Sale price From £1.99 GBP
    Sale
  • Canna - Coco - A&B Set - 1 Litre Canna - Coco: (A&B Set) - Coco Base feed

    Canna - Coco: (A&B Set) - Coco Base feed

    Sale

    Canna - Coco: (A&B Set) - Coco Base feed

    Regular price From £2.50 GBP
    Regular price £49.98 GBP Sale price From £2.50 GBP
    Sale
  • Atami - Washed & Buffered Cocos - Coco Coir Growing Media Substrate - 50 Litres Atami - Washed and Buffered Cocos (50 L)

    Atami - Washed and Buffered Cocos (50 L)

    Sale

    Atami - Washed and Buffered Cocos (50 L)

    Regular price £11.89 GBP
    Regular price £15.00 GBP Sale price £11.89 GBP
    Sale
  • Atami - Cocos Substrate - Coco Coir Growing Media Substrate - 50 Litres Atami - Cocos Substrate - 50L

    Atami - Cocos Substrate - 50L

    Sale

    Atami - Cocos Substrate - 50L

    Regular price £13.00 GBP
    Regular price £14.39 GBP Sale price £13.00 GBP
    Sale
  • Canna - Coco Natural - 50 Litres Canna - Coco: Natural - 50Ltr

    Canna - Coco: Natural - 50Ltr

    Sale

    Canna - Coco: Natural - 50Ltr

    Regular price £11.94 GBP
    Regular price £16.50 GBP Sale price £11.94 GBP
    Sale
  • Ona - Sprays (250ml) (Odour Control) Ona - Sprays (250ml) (Odour Control)

    Ona - Sprays (250ml) (Odour Control)

    Sale

    Ona - Sprays (250ml) (Odour Control)

    Regular price From £3.00 GBP
    Regular price £9.99 GBP Sale price From £3.00 GBP
    Sale
  • Intense Nutrients - Wideload Boost - 1 Litre Intense Nutrients - Wideload Boost (Flowering Booster)

    Intense Nutrients - Wideload Boost (Flowering Booster)

    Intense Nutrients - Wideload Boost (Flowering Booster)

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
  • Intense Nutrients - Coco - A&B Set - 1 Litre Intense Nutrients - Coco (A&B) (Base Feed)

    Intense Nutrients - Coco (A&B) (Base Feed)

    Intense Nutrients - Coco (A&B) (Base Feed)

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
  • Canna - Boost Accelerator - Flowering Booster - 1 Litre Canna - Boost Accelerator - Flowering Booster

    Canna - Boost Accelerator - Flowering Booster

    Sale

    Canna - Boost Accelerator - Flowering Booster

    Regular price From £2.50 GBP
    Regular price £79.99 GBP Sale price From £2.50 GBP
    Sale
  • Canna - PK 13/14 - 1 Litre Canna - PK 13/14 (PK Booster)

    Canna - PK 13/14 (PK Booster)

    Sale

    Canna - PK 13/14 (PK Booster)

    Regular price From £2.50 GBP
    Regular price £60.00 GBP Sale price From £2.50 GBP
    Sale
  • Atami - High Porosity Cocos - Coco Coir Growing Media Substrate - 50 Litres Atami - High Porosity Cocos (50L) (70% Coco + 30% perlite)

    Atami - High Porosity Cocos (50L) (70% Coco + 30% perlite)

    Sale

    Atami - High Porosity Cocos (50L) (70% Coco + 30% perlite)

    Regular price £15.00 GBP
    Regular price £18.00 GBP Sale price £15.00 GBP
    Sale
  • Intense Nutrients - Mag-Cal - Magnesium Calcium - 1 Litre Intense Nutrients - Mag/Cal (Magnesium & Calcium)

    Intense Nutrients - Mag/Cal (Magnesium & Calcium)

    Intense Nutrients - Mag/Cal (Magnesium & Calcium)

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
  • Intense Nutrients - PK Phite - 1 Litre Intense Nutrients - PK Phite (PK Booster)

    Intense Nutrients - PK Phite (PK Booster)

    Intense Nutrients - PK Phite (PK Booster)

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
  • BioBizz - All Mix - Organic Soil Substrate - 50 Litres BioBizz - All-Mix

    BioBizz - All-Mix

    BioBizz - All-Mix

    Regular price From £2.75 GBP
    Regular price Sale price From £2.75 GBP
  • Intense Nutrients - Runzyme - 1 Litre Intense Nutrients - Runzyme (Enzymes)

    Intense Nutrients - Runzyme (Enzymes)

    Intense Nutrients - Runzyme (Enzymes)

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
  • Advanced Nutrients - Bud Candy - Flowering Booster - 1 Litre Advanced Nutrients - Bud Candy® - Flower Booster

    Advanced Nutrients - Bud Candy® - Flower Booster

    Sale

    Advanced Nutrients - Bud Candy® - Flower Booster

    Regular price From £2.50 GBP
    Regular price £44.99 GBP Sale price From £2.50 GBP
    Sale
  • Canna - Coco: Professional Plus (Growing Media)

    Canna - Coco: Professional Plus (Growing Media)

    Sale

    Canna - Coco: Professional Plus (Growing Media)

    Regular price From £3.98 GBP
    Regular price £24.00 GBP Sale price From £3.98 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
  • House & Garden - Bud XL (Flowering Booster) 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
  • Intense Nutrients - Climax - Plant Finisher - 1 Litre Intense Nutrients - Climax (Plant Finisher)

    Intense Nutrients - Climax (Plant Finisher)

    Intense Nutrients - Climax (Plant Finisher)

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
  • Intense Nutrients - Silicon Ultra - 250ml Intense Nutrients - Silicon Ultra - Pro Series

    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
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