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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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  • Intense Nutrients - Dirt Grow - 1 Litre Intense Nutrients - Dirt: Grow (Base Feed)

    Intense Nutrients - Dirt: Grow (Base Feed)

    Intense Nutrients - Dirt: Grow (Base Feed)

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
  • Intense Nutrients - PK Ultra - Pro Series Intense Nutrients - PK Ultra -Pro Series (PK Booster)

    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
  • 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
  • Advanced Nutrients - Bud Factor X - 1 Litre Advanced Nutrients - Bud Factor X® - Bud Potency & Stalk Strengthener

    Advanced Nutrients - Bud Factor X® - Bud Potency & Stalk Strengthener

    Sale

    Advanced Nutrients - Bud Factor X® - Bud Potency & Stalk Strengthener

    Regular price From £3.20 GBP
    Regular price £93.95 GBP Sale price From £3.20 GBP
    Sale
  • Advanced Nutrients - Big Bud Coco Advanced Nutrients - Big Bud® - Coco - Bloom Booster

    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
    Sale
  • Atami - B'cuzz - Coco A & B (Base Feed Set) Atami - B'cuzz - Coco A & B (Base Feed Set)

    Atami - B'cuzz - Coco A & B (Base Feed Set)

    Sold out

    Atami - B'cuzz - Coco A & B (Base Feed Set)

    Regular price £39.99 GBP
    Regular price £45.99 GBP Sale price £39.99 GBP
    Sold out
  • 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
  • BioBizz - Fish Mix - 1 Litre Biobizz - Fish Mix - organic fish emulsion from the North Sea

    Biobizz - Fish Mix - organic fish emulsion from the North Sea

    Biobizz - Fish Mix - organic fish emulsion from the North Sea

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
  • Advanced Nutrients: Connoisseur - Bloom (A & B Set) (Base Feed) Advanced Nutrients: Connoisseur - Bloom (A & B Set) (Base Feed)

    Advanced Nutrients: Connoisseur - Bloom (A & B Set) (Base Feed)

    Sale

    Advanced Nutrients: Connoisseur - Bloom (A & B Set) (Base Feed)

    Regular price From £2.50 GBP
    Regular price £39.99 GBP Sale price From £2.50 GBP
    Sale
  • Canna - CANNACURE Concentrate Canna - CANNACURE Concentrate

    Canna - CANNACURE Concentrate

    Canna - CANNACURE Concentrate

    Regular price From £14.50 GBP
    Regular price Sale price From £14.50 GBP
  • 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
  • BioBizz - Bio Heaven - 1 Litre Biobizz - CalMag (Calcium and Magnesium)

    Biobizz - CalMag (Calcium and Magnesium)

    Biobizz - CalMag (Calcium and Magnesium)

    Regular price From £2.60 GBP
    Regular price Sale price From £2.60 GBP
  • Atami - Cocos Substrate 50L: X2 Hydroponics Coco Mix Growing Media

    Atami - Cocos Substrate 50L: X2 Hydroponics Coco Mix Growing Media

    Sale

    Atami - Cocos Substrate 50L: X2 Hydroponics Coco Mix Growing Media

    Regular price £26.00 GBP
    Regular price £30.00 GBP Sale price £26.00 GBP
    Sale
  • 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
  • Advanced Nutrients - Rhino Skin® - Bud Potency & Stalk Strengthener Advanced Nutrients - Rhino Skin® - Bud Potency & Stalk Strengthener

    Advanced Nutrients - Rhino Skin® - Bud Potency & Stalk Strengthener

    Sale

    Advanced Nutrients - Rhino Skin® - Bud Potency & Stalk Strengthener

    Regular price From £43.95 GBP
    Regular price £49.99 GBP Sale price From £43.95 GBP
    Sale
  • Canna - Terra Flores - 10 Litres Canna - Terra: Flores - Soil Base Feed

    Canna - Terra: Flores - Soil Base Feed

    Canna - Terra: Flores - Soil Base Feed

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
  • BioBizz - Bio Bloom - 1 Litre Biobizz - Bio Bloom - Base Feed

    Biobizz - Bio Bloom - Base Feed

    Biobizz - Bio Bloom - Base Feed

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
  • Atami Bloombastic - Flowering Booster - 325ml Atami - Bloombastic - The ‘Bling Bling’ for your plants!

    Atami - Bloombastic - The ‘Bling Bling’ for your plants!

    Sale

    Atami - Bloombastic - The ‘Bling Bling’ for your plants!

    Regular price From £47.99 GBP
    Regular price £55.19 GBP Sale price From £47.99 GBP
    Sale
  • Advanced Nutrients: Connoisseur - Grow (A & B Set) (Base Feed) Advanced Nutrients: Connoisseur - Grow (A & B Set) (Base Feed)

    Advanced Nutrients: Connoisseur - Grow (A & B Set) (Base Feed)

    Sale

    Advanced Nutrients: Connoisseur - Grow (A & B Set) (Base Feed)

    Regular price From £2.50 GBP
    Regular price £44.99 GBP Sale price From £2.50 GBP
    Sale
  • 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
  • BioBizz - Leaf Coat - 1 Litre Biobizz - Leaf Coat - protects plants!

    Biobizz - Leaf Coat - protects plants!

    Biobizz - Leaf Coat - protects plants!

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
  • Canna - BioCanna - Bio Boost - Organic Plant Bloom Stimulator Canna - Bio Boost - Organic Plant Bloom Stimulator

    Canna - Bio Boost - Organic Plant Bloom Stimulator

    Sale

    Canna - Bio Boost - Organic Plant Bloom Stimulator

    Regular price £19.99 GBP
    Regular price £29.99 GBP Sale price £19.99 GBP
    Sale
  • BioBizz - Alg A Mic - 1 Litre Biobizz - Alg-A-Mic - For stress-free plants!

    Biobizz - Alg-A-Mic - For stress-free plants!

    Biobizz - Alg-A-Mic - For stress-free plants!

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
  • BioBizz - Bio Grow - 1 Litre Biobizz - Bio Grow - Base Feed

    Biobizz - Bio Grow - Base Feed

    Biobizz - Bio Grow - Base Feed

    Regular price From £2.50 GBP
    Regular price Sale price From £2.50 GBP
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