Perennials: Need information on Russian Sage - perovskia, 1 by angele

angele wrote:
I leave mine standing too, In the spring, as soon as it is coming to life, I cut it down to about 8 or 10 inches. The branches grow back pretty quickly and by June it is lightly blooming and doesn't quit till frost. By August it is blooming gang-busters! I've found the pruned branches root very easily too. So far this plant has not been invasive in my garden, in 4 years there have only been a couple of runners come up.
Here is what the 4 year old plant looks like today (winter)

(I hate that block wall but in the summer it disappears behind flowers.)