Perlite Compost Additive - 20Ltr Bag

Improve the quality and performance of your compost mixes with this 20 litre bag of Perlite, an essential component for gardeners who want to achieve the perfect balance between drainage and aeration. Perlite is a heat-expanded volcanic mineral that introduces air pockets into growing media, helping roots to develop freely without the restrictions caused by compacted soil.

The inclusion of perlite ensures that excess water can drain away efficiently, reducing the likelihood of waterlogging — one of the most common causes of root problems in pots and containers. At the same time, it retains just enough moisture to support steady hydration, making it ideal for moisture-sensitive plants such as succulents and cacti, as well as a wide range of houseplants.

For seed sowing and propagation, perlite offers a clean, sterile environment that encourages reliable germination and successful rooting of cuttings. Its lightweight structure allows delicate roots to grow with ease, while its inert nature ensures no interference with nutrient balances in the compost.

This 20 litre bag provides a generous supply for larger-scale gardening, whether you are mixing your own potting blends, preparing propagation trays, or maintaining a collection of indoor plants. The larger volume makes it especially useful for gardeners who repot regularly or work with multiple containers and greenhouse projects.

Easy to work with and highly versatile, perlite is a trusted growing medium that helps create healthier, more supportive conditions for plant development. The 20 litre bag ensures you have plenty on hand for ongoing potting, propagation and plant care throughout the season.