Plant Spacing of Atriplicifolia Perovskia
I am planning to plant some Atriplicifolia Perovskia (Russian Sage) plants in a 5' x 10' flower bed on the south side of my garage, which I affectionately call my "little slice of Sahara" because of the hot, sunny, sandy, dry, and windy conditions there. It also can get down to 0 degrees in the winter with below freezing dry winds. If I want the Atriplicifolia Perovskia plants to be a hedge how far apart should plant them. I was considering 2' apart but wasn't sure if that was too close together. Also, do you think that some Whirling Butterflies Gaura would do well theren too?
Does anyone have any advice? I would appreciate any you could give me.