noun

An aromatic or bitter-tasting plant of a genus that includes wormwood, mugwort, and sagebrush. Several kinds are used in herbal medicine and many are cultivated for their feathery grey foliage.

Plants with leaves adapted to coping in hotter climes, the likes of rosemary, lavender, artemisias and Convolvulus cneorum, will have to be planted in well-drained soils if they are not to suffer from waterlogging in wet winters.