Leca Stones, 10-16mm, lightweight expanded clay.
pH neutral, chemically inert, pathogen free.
Leca Stone maintains perfect air-to-water ratio promoting vigorous root development so plant roots stay healthy and oxygen rich. Leca Stones unique shape provides a strong structure and a staple base for plant roots while allowing water to drain freely providing maximum oxygen to the root zone, preventing rotting and excess acidity. Plant It Clay Pebbles have a porous inner core that absorbs water and nutrients releasing them to the plant as required.