Bio Leaf Horticultural Vermiculite

Bag Size



From $10.00 NZDincl GST

Bio Leaf Horticultural Vermiculite

Bio Leaf Horticultural Vermiculite is produced by superheating mica and is an exceptional amendment used in potting mixes and soil to improve aeration and water retention. This lightweight natural mineral additive is used worldwide in many premium potting soils.

Available Grades

  • Medium Grade - 3 mm to 5 mm nugget size.
  • Coarse Grade - 10 to 15 mm nugget size


  • Seed Germination: Bio Leaf Horticultural Vermiculite's aeration and moisture-holding properties make it an excellent choice for starting seeds.
  • Container Gardening: Create lightweight, well-draining potting mixes by blending vermiculite with peat, compost, and perlite.
  • Bulb Storage: Safely store tender bulbs over the winter by layering them with vermiculite to protect against rot and temperature fluctuations.
  • Root Cuttings: Propagate houseplants, annuals, and perennials easily using vermiculite to establish new roots.
  • Horticultural and Industrial Use: Vermiculite has a long history of use in construction, agriculture, and other industries.


  • Improved Aeration: When used in sufficient quantities, it 'opens' the mix, allowing for improved airflow and better root breathing, which leads to healthier and more robust plants.
  • Moisture Retention: Absorbs moisture and keeps your pot plants hydrated for extended periods, reducing watering frequency. 
  • Enhanced Drainage: Helps improve drainage, thus reducing the potential for waterlogging issues. It helps create the right moisture balance for your potting mix.
  • Nutrient Reservoir: Acts as a reservoir for nutrients, releasing them slowly and when your plants need them the most.
  • Ease of Use: Mix with your existing potting soil; no specialized knowledge is required.


  • Mineral-rich: Vermiculite is rich in essential minerals like magnesium and calcium.
  • Non-toxic: Completely safe for all plants and free from harmful chemicals.
  • High Absorbency: Capable of absorbing 3 to 4 times its volume in water.
  • Lightweight: Airy texture, adding porosity to your soil without weighing it down.
  • pH Neutral: This won't alter the acidity or alkalinity of your soil.
  • Sterile: Free from weeds and pathogens that can harm your plants.
  • Heat-Treated: Undergoes exfoliation through high-heat treatment for maximum safety and performance.

Additional Information:

Bio Leaf Horticultural Vermiculite is not just a soil conditioner; it's an investment in a thriving garden ecosystem. It is ideal for everything from houseplants to outdoor pot plants. It offers a versatile solution for growers looking to enrich their soil.