‘Denim ‘n Lace’ doesn’t get too tall, has stronger stems and a more upright habit than most older varieties. Lacy-like, bright sky blue flowers are held on amethyst calyxes. Its calyxes are spaced very close together to give the flowers a very full look. The colorful calyxes make it look like it is still in bloom even when it is past peak. You’ll have great color nearly all season long.
As long as you plant this in full sun, you can forget about it – ‘Denim ‘n Lace’ is drought tolerant and thrives on neglect!
A perfect perennial for hot, dry climates and also exceptionally cold hardy. Perovskia can be used in a wide variety of environments with little attention through the season - a reason they have long been a staple of landscapers. Expect these plants to be a little later to emerge in spring, but also to offer color well into fall.
 
The ideal plant for hot, dry climates! Russian Sage is classified as a subshrub or woody perennial. It performs very well in full sun and any well-drained soil. Average to dry moisture levels are ideal, and few pests bother this plant. If pruning is necessary, do so in Spring when new growth appears. Prune back to just above the lowest bud.
 
From Walters Gardens Website