I have plants that are almost 20 years old and still going strong! Nice 6” tall rosettes of blue green thickened leaves are evergreen and expand slowly to 12”clumps. Summer sprays on 10-18” stems are frothy with papery, easy to dry lavender clouds of small flowers, great cut…and last forever in a dry vase! Full sun, well-drained soil, occasional water. Maintenance free. Deer proof. Sweetheart of the rock garden.