A mixture of loam, peat, sand, and nutrients, used as a growing medium for plants in containers.
More example sentences
- Five plants were grown in each 25 cm diameter pot, using commercial potting compost supplemented by liquid fertilizer.
- Plant it out and it could spread very quickly, or grow it in drainpipes pushed into the soil vertically and filled with a mixture of garden soil and potting compost.
- They were sown on vermiculite or potting compost and grown under normal cultivation conditions.