Rosemarinus officinalis A distinctive trailing rosemary, Blue Cascade forms graceful mounds that spill beautifully over walls, containers, or garden edges. Reaching 12 inches in height and cascading up to 24 inches down, this hardy variety withstands temperatures as low as -10°F. Its woody stems and aromatic foliage are rich in essential oils, making it ideal for cooking, bath care, and teas. From spring through autumn, it’s blanketed in light blue flowers that add a soft touch of color to its lush evergreen form. A culinary standout that brings both beauty and fragrance to the garden. Hardy to zones 6a–9b. PP31,838