Grow Salvia officinalis 'Icterina' (Sage 'Icterina') for its aromatic, edible leaves and luminous variegated foliage. The soft gray-green leaves are edged in golden yellow, bringing bright color to herb beds, borders, and containers even when the plant is not in bloom.
In early to mid-summer, you'll often see upright spikes of purplish-blue flowers that add an extra ornamental moment and help draw pollinators. At maturity, it typically reaches about 20-24 inches tall and develops a tidy, semi-woody form with a similar width when well sited.
Give it full sun for the strongest growth and best leaf color, but it will also tolerate part shade, especially in warmer areas. Plant in well-drained soil and avoid persistently wet spots; good drainage is the key to keeping it healthy through winter and reducing rot issues.
Once established, this sage handles dry spells and lean, rocky soils better than many perennials. Water to establish new plants, then let the soil dry slightly between waterings. A light mulch can help moderate soil temperatures, but keep it off the crown in wet seasons.
For best appearance, shear or prune lightly in spring to encourage fresh growth and keep plants compact. Avoid cutting hard into old, woody stems. Harvest leaves as needed for cooking, and remove flower stalks after bloom if you want to focus energy on foliage.