Perlite is used in soil mixes (including soilless medium). Adding it to your soil mix provides you with two primary advantages – drainage and aeration. With more air around the roots of your plants, they grow faster and yield more during harvest. It is suitable for growing plants without any soil and is non-toxic, clean, disease-free, and extremely lightweight, and easy to work with.
How to use
- Just mix equally with your garden soil to fill the pots.
- For existing plants in pots loosen the soil without damaging roots and mix it in soil well.
- It is recommended to add Perlite so it makes up around 10-50% of the total volume of potting mix.
- Add 10-20% Perlite if you want better water retention and don’t plan on using a lot of extra nutrients.
Perlite’s expanded nature makes it extremely porous, so it can absorb water, but it also improves drainage, so is ideal to mix into the compost to ensure water drains freely. It is particularly useful in plant propagation, including taking cuttings and sowing seeds.