However, ver-micompost, either produced by straight vermicomposting or byvermicomposting after composting (thermophilic phase only), out-performs compost obtained simultaneously from the same batchof horticultural waste: vermicompost can be used in high propor-tions (more than 50%) in the growth media for rooting cuttingsof rosemary whilst compost can only be used in low proportions(not above 25%).