That is the best description for Perovskia, or Russian Sage, when it is in bloom. The hardy ( Zones 5-9) perennial will give years of low maintenance, long summer blooms. Blue panicles create a lavender – blue mist which gets more intense as the flowers open. I like to use this plant as a specimen, mass planting to create a large stand. These beds are easy to maintain and offer color for much of the summer. Each plant grows 3-5′ tall with a 2-4′ spread; planting 2-3 feet apart, they will grow together as a large shrubby mass. They are also live many years, and are tolerant of poor soil. The planting outside of my late father in law’s office has been blooming for over 15 years with little to no attention.
The leaves are finely cut with a distinct blue- green color, which contrast beautifully with the blue mist of the flowers. As mentioned, Perovskia makes a great specimen plant, but also blends well into a mixed perennial bed. If more is desired, the blue mist can be accentuated with plantings of Rudbeckia. Maintenance is as simple as a late winter pruning of all stems to 6″. Where the growing season allows, deadheading will result in reblooms. Having no serious pest from the insect or disease world, it is a perfect perennial for beginner and experienced gardeners. Being so easy to grow in full sun, the challenge is making the most of the Blue Mist.