Perlite supercoarse 3 - 6mm grade vastly improves aeration of growing media as a consequence of its high air filled pore space. It holds less water than peat so the addition of perlite supercoarse creates a well-drained, healthy environment for strong root growth. Ideal for potting orchids, bromeliads, tropical plants and bonsai. What is Perlite.. Perlite is a form of glass; specifically a volcanic glass that is mined and then heated in big ovens until it ‘pops’ into a round, white material that’s used in seed-starting and potting mixtures to lighten the soil, allow more air around the roots of plants and to both help retain water and improve drainage. How to use Perlite. In your garden beds, apply a 2 layer at the same time you apply compost and other soil amendments in the spring, and work it into the top 6 12 of soil. One application will help keep your soil light and loose for several years. For container gardens and potted plants, use up to 1/3 perlite per container. For over 165 years Sinclair has been at the forefront of horticulture. Now part of the Westland family, based in Cheshire, we look forward to helping you grow. Proven, trialled and tested recipes drawing on over 50 years of horticultural expertise. Specialist technical support for the grower. A commitment to reducing environmental impact and increasing the sustainability of our products. Perlite supercoarse vastly improves aeration of growing media as a consequence of its high air filled pore space. It holds less water than peat so the addition of perlite supercoarse creates a well-drained, healthy environment for strong root growth. Ideal for potting orchids, bromeliads, tropical plants and bonsai.
