Salix eleagnos (Rosemary Willow) is a deciduous willow valued for its refined, rosemary-like foliage and graceful, flexible stems. You will notice the narrow leaves are typically gray-green above with a paler, silvery look beneath, giving the plant a soft, shimmering texture when the wind moves through the canopy.
At maturity it commonly reaches about 120-180 inches tall and can spread broadly, so plan space for its natural, airy outline. It performs best in full sun to part shade. Like many willows, it is happiest where moisture is reliable, but it can also handle ordinary garden conditions when established, especially with occasional deep watering during hot, dry spells.
Use this plant where you want quick, natural screening or a sculptural accent near a drainage swale, pond edge, or low area that stays evenly moist. Regular pruning is optional, but you can thin older stems and shape the plant in late winter to encourage fresh, vigorous growth and maintain a neat framework. Keep mulch a few inches back from the base and water deeply after planting to help roots settle in. Expect small catkins in season, followed by a tidy leaf drop in fall.