Perlite absorbs and holds vast quantities of air and moisture which helps prevent compaction. It improves aeration and drainage in composts and is stable and long-lasting. For improving aeration and drainage in seed & potting composts.

Perlite's many uses and beneficial properties include:

• Inorganic, inert and sterile
• No known toxicity or fire hazard
• Prevents compaction - improves aeration and drainage
• Does not decompose - lasts for years
• Stimulates root initiation and vigorous growth
• Insulates and minimises temperature fluctuations
• Almost neutral pH  
• Holds moisture but does not become soggy u 
• Free from disease, weeds and insects