Like others in this genus, 'Walker's Low' offers delicately hairy gray-green leaves with a tangy, fresh fragrance that a friend calls "spicy mint" and clouds of small purplish blue flowers carried on 8-9in spikes for several weeks in midsummer. Plants don't tend to split in the center as other Nepetas do. A rough shearing (cut stems back by about 2/3) after bloom keeps the plants' habit neat and will encourage some repeat bloom until frost.
Nepetas prosper in ordinary (dare we say "poor") soil and heat, and host no pest that we know of. We got great results when we matched 'Walker's Low' with Coreopsis 'Moonbeam' and Hemerocallis 'Happy Returns'.