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This is a unique mix of Azomite® and micronised volcanic rock dust: it massively boosts the mineral content of your substrate and is ideal for adding to an initial substrate mix or as a remineralising agent for your living soil bed or used soil or coco if growing in pots.

Both Azomite® and volcanic rock dust are incredibly rich in mineral content and, when combined, they offer all trace elements your substrate requires, including:

  • Calcium,
  • Magnesium,
  • Iron,
  • Manganese,
  • Silicon,
  • Cobalt,
  • Zinc,
  • Boron, and
  • Aluminium.

Azomite® and volcanic rock dust products are both certified organic and many studies have been undertaken on them: these have found that when added to a fertilisation programme they improve root systems, yields, and overall plant vigour in a variety of field crops and garden vegetables.


Top dress 1 tablespoon per 2 gallons of substrate monthly at any stage of plant growth.

Note: it is particularly beneficial to add into your initial mix or early on in the vegetative stage to give time for microbes to break down the minerals.