A classic use for Nepeta is in underplanting roses. Many roses get tall and gangly, exposing ugly knees. Nepeta covers the knees without covering the rose blooms. Nepeta's small, gray foliage generally gets lost in a blur, with just the complementary blue flower spikes in view, to blend with the rose flowers.
©2010 About.com, a part of The New York Times Company.
All rights reserved.