Vermiculite Soil Amendment

Vermiculite Soil Amendment

Vermiculite is a naturally occurring expanded mineral that improves water retention, aeration and nutrient availability in any growing medium.

Key benefits

• Retains Water
• Improves Aeration
• Supports Nutrient Availability

Suitable for

Seed Starting · Potting Blends · Plant Cuttings · Container Gardens

How to use

• Seed Starting: Mix vermiculite with peat moss or seed starter at a 50:50 ratio for excellent moisture retention and aeration during germination.
• Potting Mixes: Add 10-25% vermiculite to your potting soil to improve water retention and prevent compaction.
• Soil Amendment: Work vermiculite into clay or sandy soils to improve structure, drainage, and moisture-holding capacity.
• Propagation: Use pure vermiculite or a vermiculite/perlite mix for rooting cuttings – the moisture retention encourages root development.
• Bulb Storage: Layer bulbs and tubers in dry vermiculite to protect them from moisture loss and temperature fluctuations during dormancy.

Gardening Tip: Vermiculite and perlite are often confused but serve different purposes – vermiculite retains more water while perlite provides more drainage. For most applications, combining both gives you the best of both worlds! Use vermiculite for moisture-loving plants and seed starting, and add more perlite for cacti, succulents, and plants that prefer drier conditions. Vermiculite is also excellent for covering seeds that need light to germinate – it lets light through while keeping seeds moist!