Rosemary (Rosmarinus officinalis) is a woody, perennialherb with fragrant evergreen needle-like leaves. It is native to the Mediterranean region. It is a member of the mint family Lamiaceae, which also includes many other herbs.
Transplant rosemary plants in spring. Leave 45cm (18in) between plants (one plant should provide plenty for use in a household).
Cut a branch of rosemary from an existing established bush about 5-7½cm (2-3in), although almost any sized cutting should root. Remove the leaves from the bottom 2½cm (1in) and, if available, dip in rooting hormone. Stand, cut side down, into a container of standard potting compost, water from below and put in a propagator or cover with a clear plastic bag. A temperature of 15-20°C (60-70°F) is needed for the cuttings to root.