Silver Sage (Salvia argentea) grows to only 2-5 feet in height and width, and prefers sunny, dry location with excellent drainage. The plant requires moderate water and, with regular irrigation, should not be allowed to dry out too much. Though many people love Silver Sage because of its ornamental foliage, it does display small white and off-white flowers in mid to late summer.
Plant thrives in USDA Zones 5-9. Care when growing Silver Sage in colder regions involves planting in a pot and bringing it inside for the winter when night temperatures threaten to drop below freezing, using it as an attractive and fragrant source of houseplant for the winter months. The soil should be allowed to almost dry out between waterings, and during the winter months the plant should remain in a cool, bright spot in the home. When Spring arrives water the plant more frequently and move it to a protected, sunny location outdoors. Once the plant is back outside, water pots deeply to encourage new growth.
Silver Sage is an excellent choice for rock gardens and for perennial borders, where it will add silvery-blue foliage to the garden in the Summer months. Plants are best grouped as single specimen or in a clumping mass as a ground cover. It's also a great plant for mass plantings and can also be grown in containers, raised beds and window boxes.