There are many species of sage, but the most popular is common or garden sage (Salvia officinalis). This herb is a hardy (to zone 4) perennial that should be watered frequently until it’s well established and then watered infrequently. The seed doesn’t store well and, although it germinates quickly, it takes about two years for the bush to grow to the productive stage. It is better therefore to propagate sage from cuttings.
One quaint legend about the herb is the belief that it is bad luck to plant your own. A stranger must be found to do it for you. Also, ensure sage shares the bed with another herb. A bed full of sage brings misfortune.