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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
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    • All Tools & Accessories
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  • Intense Nutrients - Wideload Boost - 1 Litre

    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
    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 £2.50 GBP
    Regular price £44.99 GBP Sale price From £2.50 GBP
    Unit price /  per 
    Sale
  • 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 
  • Plant Magic - Boost - Flowering Booster - 1 Litre

    Plant Magic - Boost (Flower Booster)

    Sale

    Plant Magic - Boost (Flower Booster)

    Regular price From £39.95 GBP
    Regular price £45.99 GBP Sale price From £39.95 GBP
    Unit price /  per 
    Sale
  • Plant Detonator - Bud Booster - 1L (Flower Booster)

    Plant Detonator - Bud Booster - 1L (Flower Booster)

    Sale

    Plant Detonator - Bud Booster - 1L (Flower Booster)

    Regular price £26.99 GBP
    Regular price £40.00 GBP Sale price £26.99 GBP
    Unit price /  per 
    Sale
  • Advanced Nutrients - CarboLoad - 1 Litre

    Advanced Nutrients - CarboLoad® - Flowering Booster

    Sale

    Advanced Nutrients - CarboLoad® - Flowering Booster

    Regular price From £2.50 GBP
    Regular price £12.00 GBP Sale price From £2.50 GBP
    Unit price /  per 
    Sale
  • Shogun - Sumo Boost - 1 Litre

    Shogun - Sumo Boost (Flower Booster)

    Sale

    Shogun - Sumo Boost (Flower Booster)

    Regular price From £2.50 GBP
    Regular price £210.00 GBP Sale price From £2.50 GBP
    Unit price /  per 
    Sale
  • ROCK RESINATOR 1L Hydroponics Flower Bloom Stimulator for Monster Heavier Yields

    ROCK RESINATOR 1L Hydroponics Flower Bloom Stimulator for Monster Heavier Yields

    Sale

    ROCK RESINATOR 1L Hydroponics Flower Bloom Stimulator for Monster Heavier Yields

    Regular price From £69.95 GBP
    Regular price £225.42 GBP Sale price From £69.95 GBP
    Unit price /  per 
    Sale
  • Shogun - Sumo Active Boost (Hydroponics Flower Booster)

    Shogun - Sumo Active Boost (Hydroponics Flower Booster)

    Sale

    Shogun - Sumo Active Boost (Hydroponics Flower Booster)

    Regular price From £2.50 GBP
    Regular price £13.00 GBP Sale price From £2.50 GBP
    Unit price /  per 
    Sale
  • Mills Nutrients - C4 - Flowering Booster - 5 Litres

    Mills - C4 (Flower Booster)

    Sale

    Mills - C4 (Flower Booster)

    Regular price From £17.95 GBP
    Regular price £21.95 GBP Sale price From £17.95 GBP
    Unit price /  per 
    Sale
  • Green Planet - Bud Booster (Flowering Booster)

    Green Planet - Bud Booster (Flowering Booster)

    Green Planet - Bud Booster (Flowering Booster)

    Regular price From £33.94 GBP
    Regular price Sale price From £33.94 GBP
    Unit price /  per 
  • Grenade Nutrients - Green (Boost & Silicon)

    Grenade Nutrients - Green (Boost & Silicon)

    Grenade Nutrients - Green (Boost & Silicon)

    Regular price £100.00 GBP
    Regular price Sale price £100.00 GBP
    Unit price /  per 
  • VitaLink Buddy for Enhanced Flower Development and Yield

    VitaLink Buddy for Enhanced Flower Development and Yield

    VitaLink Buddy for Enhanced Flower Development and Yield

    Regular price From £7.50 GBP
    Regular price Sale price From £7.50 GBP
    Unit price /  per 
  • Canna - BioCanna - 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
    Unit price /  per 
    Sale
  • Atami - Rokzbastic - Flowering Booster - 325ml

    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
    Unit price /  per 
    Sale
  • Plagron - Power Buds (Speeds up Flowering)

    Plagron - Power Buds (Speeds up Flowering)

    Sale

    Plagron - Power Buds (Speeds up Flowering)

    Regular price £19.99 GBP
    Regular price £25.00 GBP Sale price £19.99 GBP
    Unit price /  per 
    Sale
  • Shogun - Geisha - Foliar Spray

    Shogun - Geisha (Plant Health) Folia Spray

    Shogun - Geisha (Plant Health) Folia Spray

    Regular price £9.95 GBP
    Regular price Sale price £9.95 GBP
    Unit price /  per 
  • HydroTops - Solo Soil: Boost

    HydroTops - Solo Soil: Boost

    Sale

    HydroTops - Solo Soil: Boost

    Regular price From £2.50 GBP
    Regular price £25.00 GBP Sale price From £2.50 GBP
    Unit price /  per 
    Sale
  • 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
    Unit price /  per 
    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
    Unit price /  per 
    Sale
  • Plagron - Green Sensation (For heavier and compact buds)

    Plagron - Green Sensation (For heavier and compact buds)

    Plagron - Green Sensation (For heavier and compact buds)

    Regular price £99.99 GBP
    Regular price Sale price £99.99 GBP
    Unit price /  per 
  • HydroTops - Flower Feed

    HydroTops - Flower Feed

    Sale

    HydroTops - Flower Feed

    Regular price From £2.50 GBP
    Regular price £22.49 GBP Sale price From £2.50 GBP
    Unit price /  per 
    Sale
  • Crazy Hills - Elan (All-In-One-Booster)

    Crazy Hills - Elan (All-In-One-Booster)

    Sold out

    Crazy Hills - Elan (All-In-One-Booster)

    Regular price £34.95 GBP
    Regular price Sale price £34.95 GBP
    Unit price /  per 
    Sold out
  • 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
    Unit price /  per 
    Sale
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