Hydroponic Nutrients & Plant Feed

Shop hydroponic nutrients and plant feed for indoor growing across hydroponic systems, coco coir and soil. The SteelRoots range includes base grow and bloom nutrients, flowering boosters, root and growth additives, CalMag and nutrient supplements, organic fertilisers, enzymes, propagation nutrients, foliar feeds, mycorrhizal products and flushing and finishing formulas.

Choose from established plant nutrition brands including CANNA, Athena, Advanced Nutrients, BioBizz, SHOGUN, Plagron, Dutch Pro, VitaLink, Nutrifield, Growth Technology, Plant Magic, House & Garden and Growers Ark. The collection covers complete base-feeding programmes alongside specialist additives and supplements, making it easier to find plant nutrition for different growth stages, growing media and feeding systems.

Nutrient formulations, application methods and suitability vary between products. Check the individual product instructions when selecting nutrients for hydroponic, coco or soil growing, particularly when combining base nutrients with boosters, supplements or additives. For help working out nutrient quantities by reservoir size and growth stage, use the SteelRoots Hydroponic Nutrient Calculator.

  • Monkey Nutrients Mag Cal
    Monkey Nutrients

    Monkey Nutrients Mag Cal

    £5.95
    £5.95

    MONKEY NUTRIENTS - MAG-CAL Monkey Mag Cal is an important additive if you are growing using coco as the substrate, although you may find it necessary...

    Size: 250ML
  • Plagron power roots additive containers on a white backgroundPlagron Power Roots 250 ml purple bottle with white cap on a white background.
    Plagron power roots additive containers on a white backgroundPlagron Power Roots 250 ml purple bottle with white cap on a white background.
    Plagron Power Roots 500 ml purple bottle with white cap on a white background.Plagron Power Roots 250 ml purple bottle with white cap on a white background.
    Plagron Power Roots 1 litre purple bottle with white cap on a white background.Plagron Power Roots 250 ml purple bottle with white cap on a white background.
    Plagron Power Roots 5 litre purple jerrycan on a white background.Plagron Power Roots 250 ml purple bottle with white cap on a white background.
    Plagron

    Plagron Power Roots | Root Stimulator for Soil & Coco

    £18.00
    £18.00
    £72.00 l

    Plagron Power Roots Root Stimulator Plagron Power Roots is a root-strengthening additive for plants grown in soil, peat and coco. Its formula contains humic acids, seaweed...

    SIZE: 250 ML
  • Terp Booster Nutrient | Premium Flavor EnhancerTerp Booster Nutrient | Premium Flavor Enhancer
    Terp Booster Nutrient | Premium Flavor Enhancer
    GREENPLANET

    Terp Booster Nutrient | Premium Flavor Enhancer

    £15.00
    £15.00

    Unlock the full potential of your plants with Terp Booster, the premier solution for enhancing terpene profiles and boosting trichome production. This specialized formula is engineered...

    size: 1ltr
  • Plagron Hydro A and B hydroponic nutrient bottles and canistersPlagron Hydro A and Hydro B 1 litre bottle set
    Plagron Hydro A and B hydroponic nutrient bottles and canistersPlagron Hydro A and Hydro B 1 litre bottle set
    Plagron Hydro A and Hydro B 5 litre canister setPlagron Hydro A and Hydro B 1 litre bottle set
    Plagron

    Plagron Hydro A&B Two-Part Hydroponic Base Nutrient Set

    £15.00
    £15.00
    £15.00 l

    Plagron Hydro A&B is a two-part mineral base nutrient for plants grown in hydroponic systems. The matched Hydro A and Hydro B concentrates provide nutrition throughout...

    size: 1 LTR
  • A set of Athena Bloom 2-part flowering nutrient containers parts a and b, arranged together on a white background.Athena Blended Bloom B 5 Gallon flowering nutrient being dispensed in a professional mixing facility
    A set of Athena Bloom 2-part flowering nutrient containers parts a and b, arranged together on a white background.Athena Blended Bloom B 5 Gallon flowering nutrient being dispensed in a professional mixing facility
    Two white plastic 1 gallon jugs of Athena Bloom balanced fertilizer, labeled A and B, with blue and white labels, shown on a clean white background.Athena Blended Bloom B 5 Gallon flowering nutrient being dispensed in a professional mixing facility
    Two white plastic 5 gallon drums of Athena Bloom 2-Part Flowering Nutrient, labeled A and B, on a clean white background.Athena Blended Bloom B 5 Gallon flowering nutrient being dispensed in a professional mixing facility
    Save £17.05
    Athena

    Athena Blended Line Bloom | Premium 2-Part Liquid Flowering Nutrient

    £22.95
    £22.95 £40.00

    Athena Blended Line Bloom A & B is a professional two-part liquid mineral fertiliser formulated for flowering and fruiting plants. Designed for precision horticulture, Athena Bloom...

    Size: 1 QT
  • Athena IPW Integrated Plant Wash 1 Quart and 1 Gallon containersAthena IPW Integrated Plant Wash 5 Gallon being dispensed by SteelRoots Garden Supplies in a professional facility
    Athena IPW Integrated Plant Wash 1 Quart and 1 Gallon containersAthena IPW Integrated Plant Wash 5 Gallon being dispensed by SteelRoots Garden Supplies in a professional facility
    Athena IPW Integrated Plant Wash 1 Gallon container for professional indoor horticultureAthena IPW Integrated Plant Wash 5 Gallon being dispensed by SteelRoots Garden Supplies in a professional facility
    Save £12.04
    Athena

    Athena IPW Integrated Plant Wash | Foliar Leaf Cleaner

    £55.95
    £55.95 £67.99

    Athena IPW Integrated Plant Wash – Professional Foliar Leaf Cleaner Athena IPW Integrated Plant Wash is a concentrated foliar leaf cleaner developed by Athena for professional...

    Size: 1 QT
  • Athena Blended Line Grow A & B Liquid NutrientAthena Blended Line Grow A & B Liquid Nutrient
    Athena Blended Line Grow A & B Liquid Nutrient
    Athena Blended Line Grow A & B 1 Gallon two-part vegetative nutrient setAthena Blended Line Grow A & B Liquid Nutrient
    5 Gallon Athena Grow blended 2-part vegetative hydroponic nutrient, labeled A and B, on a clean white background.Athena Blended Line Grow A & B Liquid Nutrient
    Save £17.05
    Athena

    Athena Blended Line Grow A & B Liquid Nutrient

    £22.95
    £22.95 £40.00

    Athena Blended Line Grow A & B is a professional two-part liquid mineral fertiliser formulated for plants during the vegetative growth stage. Designed for precision horticulture,...

    Size: 1 QT
  • Athena Pro Bloom 0-12-24 Soluble Flowering FertiliserAthena Pro Bloom 0-12-24 Soluble Flowering Fertiliser
    Athena Pro Bloom 0-12-24 Soluble Flowering Fertiliser
    Athena Pro Bloom 0-12-24 Soluble Flowering Fertiliser
    Athena Pro Bloom 0-12-24 Soluble Flowering Fertiliser
    Save £2.55
    Athena

    Athena Pro Bloom 0-12-24 Soluble Flowering Fertiliser

    £21.95
    £21.95 £24.50
    £24.39 kg

    Athena Pro Bloom 0-12-24 – Professional Soluble Flowering Fertiliser Athena Pro Bloom is a highly concentrated, fully water-soluble dry mineral fertiliser developed for the flowering and...

    Weight: 2 Lb | 900g
Showing 8 of 268
Show more