Vermiculite Compost Additive - 10Ltr Bag

Create the perfect growing environment for seeds, young plants and houseplants with this 10 litre bag of Vermiculite. Lightweight, sterile and highly absorbent, vermiculite is an essential addition to many compost mixes, providing the right balance of moisture retention and aeration to support healthy root development.

When mixed into compost, vermiculite helps to keep the growing medium open and free-draining while still holding enough moisture for seeds and seedlings to thrive. This makes it particularly useful for seed sowing, where an even moisture level is crucial for successful germination. It also reduces compaction in pots and trays, allowing delicate roots to spread easily.

Vermiculite can also be used as a gentle top layer over newly sown seeds to maintain consistent moisture and protect them from disturbance. Its clean, sterile properties make it ideal for propagation work, giving young plants a disease-free start.

For houseplants, cuttings and container plants, adding vermiculite to your potting mix helps regulate watering and encourages healthier root systems. It is especially beneficial in mixes for plants that prefer consistent but not excessive moisture.

Supplied in a generous 10 litre bag, this product provides plenty of material for repeated use in seed trays, potting mixes and repotting tasks. Whether you’re raising seedlings, rooting cuttings or improving compost structure, vermiculite is a dependable choice for supporting strong, successful plant growth.