Nepta ‘Walkers Low’
This is an unfussy plant–and I mean a no brainer for the Oklahoma garden. It blooms early and for a very long time. It does fine in poor to average soil and takes any amount of heat and humidity. The silver-gray foliage and pale purple flowers grows into a nice mound shape 24″ tall x 24″ wide. Because it comes out early, I don’t hesitate to shear it back as soon as the blooms fade. It comes right back and keeps blooming. Actually its not a problem to shear it back 2-3 times in the summer.