Constant Color from Catmint Lovely purple flower spikes set off the gray-green foliage of Walker's Low catmint. Give the plant a haircut after its initial flush of flowers in late spring to keep it compact and initiate another cycle of bloom. Count on catmint to be low-maintenance and stand up to hot and dry conditions
List of fast filling perennials. Choose performers, not prima donnas. Though you may have to forgo some of your favorites, choose plants that will have an impact from day one instead of needing a few growing seasons to put on a show.