Perlite is a lightweight granular material that’s white in colour. It’s lightweight, sterile, easy to handle, and is long-lasting! It’s neither alkaline nor acidic!
Perlite’s expanded nature makes it extremely porous, so it can absorb water, but it also improves drainage, so it is ideal to mix it into compost to ensure water drains freely! Perlite is particularly useful in plant propagation, including taking cuttings and sowing seeds!