2007 Perennial Plant of the Year - Nepeta 'Walker's Low' The Perennial Plant Association has granted Nepeta 'Walker's Low' with the befitting 2007 Perennial Plant of the Year award. I've been an admirer of this plant since its release. Does a wonderful job of attracting bees, butterflies and other beneficials to the garden. And the normal pests in the garden, deer and rabbit, tend to dislike