Perlite speeds up germination and improves seedling growth. For seeds, sow on a well-watered mixture of equal parts perlite and Sphagnum Moss Peat. Alternatively, add 1 part perlite to 2 parts ready-mixed potting compost. Perlite is used in potting compost mixes to improves aeration, draining and insulation.
Additionally, what is the ratio of perlite to soil?
The perlite will trap air in the compost and encourage water to drain through, ensuring the plant’s roots will never sit in damp soil. Mix perlite with compost at a ratio of around 1:4. Do this before planting to ensure an even mix.
Hereof, how much perlite do I add to indoor plants?
Again, use a 1:4 ratio of perlite to compost. Another option would be to use vermiculite, which also improves air porosity. Unlike perlite, however, it holds on to water, slowly releasing it back to the plant as it is needed. You can use it to replace up to half of the compost.
