Perlite Compost Additive - 10Ltr Bag

Create the perfect balance of drainage and aeration in your growing media with this 10 litre bag of Perlite. Perlite is a naturally occurring, heat-expanded volcanic mineral widely used in horticulture to improve compost structure, support healthy root development and enhance water management.

When mixed into compost, perlite helps keep the growing medium light and open, ensuring ample air circulation around the roots. This prevents compaction over time and gives plants the conditions they need to grow strong, healthy root systems. Its excellent drainage properties make it particularly beneficial for plants that dislike sitting in wet soil, such as houseplants, cacti, succulents and container-grown perennials.

Perlite is also invaluable for seed sowing and propagation. Its lightweight structure encourages fast, even germination, while its sterile nature minimises the risk of disease. For cuttings, perlite provides a clean, supportive environment that retains enough moisture for root formation without becoming waterlogged.

Because it holds some moisture while still allowing free drainage, perlite helps regulate watering and reduces the risk of root rot — especially important in indoor plants and containers. It can also be used as a top layer on pots to improve moisture distribution and reduce evaporation.

Supplied in a practical 10 litre bag, this product offers plenty of material for mixing into compost, filling propagation trays or supporting regular repotting. Whether you are raising seedlings, propagating cuttings or enhancing the health of houseplants, perlite is a dependable, versatile component of any high-quality growing mix.