What is Vermiculite?
Vermiculite is a naturally occurring mineral that expands when heated. Unlike perlite, vermiculite holds moisture and nutrients, making it ideal for plants that need consistent hydration and feeding.
Benefits of Vermiculite
- Retains moisture – reduces watering frequency
- Holds nutrients – prevents fertiliser from washing away
- Improves aeration – keeps soil from compacting
- Sterile & pH neutral – safe for seedlings and cuttings
- Lightweight – great for container gardening
Vermiculite vs Perlite: Which to Use?
| Vermiculite | Perlite |
|---|---|
| Retains moisture | Drains quickly |
| Best for moisture-loving plants | Best for succulents & cacti |
| Holds nutrients | Does not hold nutrients |
| Ideal for seed germination | Ideal for drainage improvement |
How Much Vermiculite to Use
- General potting mix: 20–25% vermiculite
- Seed germination: 50% vermiculite + 50% cocopeat
- Moisture-loving plants: up to 30% vermiculite
Best Plants for Vermiculite
- Ferns, peace lilies and moisture-loving tropicals
- Vegetable seedlings and herbs
- Cuttings and propagation