Description
Leca 2-4mm
Lightweight expanded clay aggregate which has been fired in a kiln. The heating process causes gases trapped in the clay to expand , forming thousands of small bubbles and giving the clay balls a porous structure. It is commonly used as a growing medium in hydroponics and blended with other growing mediums such as soil or peat. It can improve compaction resistance, drainage, retain water during drought, insulate roots during frost and provide roots with increased oxygen levels promoting vigorous growth. It is often used in bonsai soil mixes.
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