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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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  • Canna - Spanner - For Opening 5 Litre & 10 Litre Bottles Canna - Spanner

    Canna - Spanner

    Canna - Spanner

    Regular price £6.48 GBP
    Regular price Sale price £6.48 GBP
  • Ona - Gels (3.8 KG Pail) (Odour Control) Ona - Gels (3.8 KG Pail) (Odour Control)

    Ona - Gels (3.8 KG Pail) (Odour Control)

    Ona - Gels (3.8 KG Pail) (Odour Control)

    Regular price £42.95 GBP
    Regular price Sale price £42.95 GBP
  • Atami - Rokzbastic - Flowering Booster - 325ml Atami - Rokzbastic 325ml PK 10/20 Flowering Enhancer & Hardener (NO PGR's)

    Atami - Rokzbastic 325ml PK 10/20 Flowering Enhancer & Hardener (NO PGR's)

    Sale

    Atami - Rokzbastic 325ml PK 10/20 Flowering Enhancer & Hardener (NO PGR's)

    Regular price £47.99 GBP
    Regular price £55.99 GBP Sale price £47.99 GBP
    Sale
  • Advanced Nutrients - Revive - 1 Litre Advanced Nutrients - Revive - Plant Aid

    Advanced Nutrients - Revive - Plant Aid

    Sale

    Advanced Nutrients - Revive - Plant Aid

    Regular price £28.95 GBP
    Regular price £34.95 GBP Sale price £28.95 GBP
    Sale
  • Canna - BioCanna - Bio Flores - 1 Litre Canna Nutrients - Bio Flores - Organic Base Feed

    Canna Nutrients - Bio Flores - Organic Base Feed

    Canna Nutrients - Bio Flores - Organic Base Feed

    Regular price £16.99 GBP
    Regular price Sale price £16.99 GBP
  • 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
  • Intense Nutrients - Go+ (Plant Health) Intense Nutrients - Go+ (Plant Health)

    Intense Nutrients - Go+ (Plant Health)

    Intense Nutrients - Go+ (Plant Health)

    Regular price £14.95 GBP
    Regular price Sale price £14.95 GBP
  • Canna - Flush (Flushing Agent)

    Canna - Flush (Flushing Agent)

    Sale

    Canna - Flush (Flushing Agent)

    Regular price From £7.95 GBP
    Regular price £11.40 GBP Sale price From £7.95 GBP
    Sale
  • Atami - Washed & Buffered Cocos (50 Litres) X 2 (Premium Coco Coir Mix for Vigorous Plant Growth)

    Atami - Washed & Buffered Cocos (50 Litres) X 2 (Premium Coco Coir Mix for Vigorous Plant Growth)

    Sale

    Atami - Washed & Buffered Cocos (50 Litres) X 2 (Premium Coco Coir Mix for Vigorous Plant Growth)

    Regular price £25.80 GBP
    Regular price £30.00 GBP Sale price £25.80 GBP
    Sale
  • Atami - B'cuzz: Coco Booster Uni Atami - B'cuzz: Coco Booster Uni

    Atami - B'cuzz: Coco Booster Uni

    Sale

    Atami - B'cuzz: Coco Booster Uni

    Regular price £27.99 GBP
    Regular price £30.00 GBP Sale price £27.99 GBP
    Sale
  • Atami - B'Cuzz - Bloom Stimulator - Explosive Bloom Production Atami - B'Cuzz - Bloom Stimulator - Explosive Bloom Production

    Atami - B'Cuzz - Bloom Stimulator - Explosive Bloom Production

    Sale

    Atami - B'Cuzz - Bloom Stimulator - Explosive Bloom Production

    Regular price £139.99 GBP
    Regular price £145.99 GBP Sale price £139.99 GBP
    Sale
  • BUDDHAS TREE - FLOWER BURST (Flowering Booster)

    BUDDHAS TREE - FLOWER BURST (Flowering Booster)

    Sale

    BUDDHAS TREE - FLOWER BURST (Flowering Booster)

    Regular price £59.94 GBP
    Regular price £79.99 GBP Sale price £59.94 GBP
    Sale
  • Advanvced Nutrients - Tasty Terpenes™ - Flower Potency & Stalk Strengthener (Previously Nirvana)

    Advanvced Nutrients - Tasty Terpenes™ - Flower Potency & Stalk Strengthener (Previously Nirvana)

    Sale

    Advanvced Nutrients - Tasty Terpenes™ - Flower Potency & Stalk Strengthener (Previously Nirvana)

    Regular price From £15.00 GBP
    Regular price £45.00 GBP Sale price From £15.00 GBP
    Sale
  • 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
  • Canna - Aqua Flores - Set A&B CANNA - Aqua Flores Set (A+B) (Hydro Base Feed)

    CANNA - Aqua Flores Set (A+B) (Hydro Base Feed)

    Sale

    CANNA - Aqua Flores Set (A+B) (Hydro Base Feed)

    Regular price From £2.50 GBP
    Regular price £55.40 GBP Sale price From £2.50 GBP
    Sale
  • BioBizz - Bio Heaven - 1 Litre Biobizz - Bio Heaven - stimulates enzymatic activity

    Biobizz - Bio Heaven - stimulates enzymatic activity

    Biobizz - Bio Heaven - stimulates enzymatic activity

    Regular price From £2.60 GBP
    Regular price Sale price From £2.60 GBP
  • Atami Hydro ROKZ Coco 60-40 (Various Sizes)

    Atami Hydro ROKZ Coco 60-40 (Various Sizes)

    Atami Hydro ROKZ Coco 60-40 (Various Sizes)

    Regular price From £3.75 GBP
    Regular price Sale price From £3.75 GBP
  • 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
  • Advanced Nutrients: Growing Media - Coco Plus 50 Litre - Cultivator Series (70% Coco / 30% Perlite - 50 Litre)

    Advanced Nutrients: Growing Media - Coco Plus 50 Litre - Cultivator Series (70% Coco / 30% Perlite - 50 Litre)

    Sold out

    Advanced Nutrients: Growing Media - Coco Plus 50 Litre - Cultivator Series (70% Coco / 30% Perlite - 50 Litre)

    Regular price £15.49 GBP
    Regular price Sale price £15.49 GBP
    Sold out
  • Advanced Nutrients: Growing Media - Coco Mix 50 Litre - Cultivator Series (50% Coco / 30% Perlite / 20% Clay Pebbles - 50 Litre)

    Advanced Nutrients: Growing Media - Coco Mix 50 Litre - Cultivator Series (50% Coco / 30% Perlite / 20% Clay Pebbles - 50 Litre)

    Sold out

    Advanced Nutrients: Growing Media - Coco Mix 50 Litre - Cultivator Series (50% Coco / 30% Perlite / 20% Clay Pebbles - 50 Litre)

    Regular price £15.49 GBP
    Regular price Sale price £15.49 GBP
    Sold out
  • ONA - Air Filter 12

    ONA - Air Filter 12

    ONA - Air Filter 12

    Regular price £40.68 GBP
    Regular price Sale price £40.68 GBP
  • Atami - High Porosity Cocos 50L: X2 Hydroponics Coco/Perlite Mix Growing Media

    Atami - High Porosity Cocos 50L: X2 Hydroponics Coco/Perlite Mix Growing Media

    Sale

    Atami - High Porosity Cocos 50L: X2 Hydroponics Coco/Perlite Mix Growing Media

    Regular price £30.00 GBP
    Regular price £35.00 GBP Sale price £30.00 GBP
    Sale
  • Atami - Janeco-Lightmix 50L: X2 Hydroponics Light Soil Mix Compost Growing Media

    Atami - Janeco-Lightmix 50L: X2 Hydroponics Light Soil Mix Compost Growing Media

    Atami - Janeco-Lightmix 50L: X2 Hydroponics Light Soil Mix Compost Growing Media

    Regular price £25.90 GBP
    Regular price Sale price £25.90 GBP
  • Advanced Nutrients - OG Organics™ Sensi Cal Mag Xtra® (MagCal)

    Advanced Nutrients - OG Organics™ Sensi Cal Mag Xtra® (MagCal)

    Sold out

    Advanced Nutrients - OG Organics™ Sensi Cal Mag Xtra® (MagCal)

    Regular price £39.99 GBP
    Regular price £44.99 GBP Sale price £39.99 GBP
    Sold out
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