Growing media

摘要

Before peat cornered the market, there was a time when most nurserymen would have used loam-based growing media. Today, although some are still peat-based, others include bark, sand, rock-wool, perlite, vermiculite and coconut, while a wide range based on recycled botanical waste is also available. But despite the ever-changing list of ingredients, the criteria for choosing a growing medium remain the same.