Grow Additives

High-Performance Structural Additives & Horticultural Silica Construct an unyielding biological framework capable of supporting high-density floral weight. Our premium grow additives collection is engineered to optimize structural integrity, cell wall lignification, and rapid vascular development. Featuring highly concentrated potassium silicates and bio-available monosilicic acids, these advanced formulas reinforce plant tissue at a cellular level, maximizing internal stalk diameter and increasing resistance to environmental stress. Build a robust branching architecture and expand your canopy's vital nutrient transport pathways for unrestricted translocation. Fortify your framework. Secure your yield.

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Choose the right grow additives

Use the filters to narrow by brand, price and availability. For technical products, check dimensions, capacity, wattage or connection size before ordering.

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  • GREEN PLANET OCEAN MAGIC GREEN PLANET OCEAN MAGIC – product image 2

    Green Planet Ocean Magic

    Green Planet
    $27.00 AUD
    $27.00 AUD
  • Anarchy Nutrients ROOTS Anarchy Nutrients ROOTS – product image 2

    Anarchy Nutrients ROOTS

    Anarchy Nutrients
    From $29.00 AUD
    From $29.00 AUD
  • CANNA CALMAG CANNA CALMAG

    CANNA Calmag

    CANNA
    From $65.00 AUD
    From $65.00 AUD
  • CANNAZYM CANNAZYM

    CANNAZYM

    CANNA
    From $30.00 AUD
    From $30.00 AUD
  • CANNA RHIZOTONIC CANNA RHIZOTONIC

    CANNA Rhizotonic

    CANNA
    From $60.00 AUD
    From $60.00 AUD
  • Professor's Go Green Professor's Go Green – product image 2
    Sale

    Professor's Go Green

    Professor's Nutrients
    From $29.95 AUD
    $38.50 AUD From $29.95 AUD
    Sale
  • Plant Mechanics Super N+ Plant Mechanics Super N+ – product image 2
    Sale

    Plant Mechanics Super N+

    Plant Mechanics
    From $19.95 AUD
    $20.00 AUD From $19.95 AUD
    Sale
  • Plant Mechanics Super Si

    Plant Mechanics Super Si

    Plant Mechanics
    From $19.99 AUD
    From $19.99 AUD
  • Anarchy Nutrients PK+ Anarchy Nutrients PK+ – product image 2

    Anarchy Nutrients PK+

    Anarchy Nutrients
    From $65.00 AUD
    From $65.00 AUD
  • Anarchy Nutrients SILICA Anarchy Nutrients SILICA – product image 2

    Anarchy Nutrients SILICA

    Anarchy Nutrients
    From $49.00 AUD
    From $49.00 AUD
  • Anarchy Nutrients YIELDZ

    Anarchy Nutrients YIELDZ

    Anarchy Nutrients
    From $95.00 AUD
    From $95.00 AUD
  • Anarchy Nutrients TERPZ Anarchy Nutrients TERPZ – product image 2

    Anarchy Nutrients TERPZ

    Anarchy Nutrients
    From $25.00 AUD
    From $25.00 AUD
  • Anarchy Nutrients PK POWDER Anarchy Nutrients PK POWDER – product image 2

    Anarchy Nutrients PK POWDER

    Anarchy Nutrients
    From $25.00 AUD
    From $25.00 AUD
  • Anarchy Nutrients BUDMASTER Anarchy Nutrients BUDMASTER – product image 2

    Anarchy Nutrients BUDMASTER

    Anarchy Nutrients
    From $42.00 AUD
    From $42.00 AUD
  • Anarchy Nutrients BUDZ

    Anarchy Nutrients BUDZ

    Anarchy Nutrients
    From $42.00 AUD
    From $42.00 AUD
  • GREEN PLANET PRO-CAL GREEN PLANET PRO-CAL – product image 2

    Green Planet Pro-Cal

    Green Planet
    From $20.00 AUD
    From $20.00 AUD
  • GREEN PLANET PLANT GUARD ONE LITRE

    Green Planet Plant Guard One Litre

    Green Planet
    $60.00 AUD
    $60.00 AUD
  • Anarchy Nutrients VEGANIX Anarchy Nutrients VEGANIX – product image 2

    Anarchy Nutrients VEGANIX

    Anarchy Nutrients
    From $32.00 AUD
    From $32.00 AUD
  • Anarchy Nutrients RUSH

    Anarchy Nutrients RUSH

    Anarchy Nutrients
    From $75.00 AUD
    From $75.00 AUD
  • Anarchy Nutrients PRO MICROBES Anarchy Nutrients PRO MICROBES – product image 2

    Anarchy Nutrients PRO MICROBES

    Anarchy Nutrients
    From $79.00 AUD
    From $79.00 AUD
  • Anarchy Nutrients MEGATHRIVE Anarchy Nutrients MEGATHRIVE – product image 2

    Anarchy Nutrients MEGATHRIVE

    Anarchy Nutrients
    From $42.00 AUD
    From $42.00 AUD
  • Anarchy Nutrients CALMAG Anarchy Nutrients CALMAG – product image 2

    Anarchy Nutrients CALMAG

    Anarchy Nutrients
    From $35.00 AUD
    From $35.00 AUD
  • Anarchy Nutrients ANARCHY Anarchy Nutrients ANARCHY – product image 2

    Anarchy Nutrients ANARCHY

    Anarchy Nutrients
    From $49.00 AUD
    From $49.00 AUD