Geranium phaeum 'Margaret Wilson', Hardy Geranium

Bluish-lilac reflexed flowers over a mosaic of showy, variegated leaves. In our garden, it's somewhat slow to increase but always hardy and the plant reliably sells itself out every year. Some accounts say it increases quickly but that's sadly not our experience- but maybe I am neglecting it??  I would list it in my top ten favorite hardy geraniums. 

Mature size: 1 ft T x W. 

Minimum temperature: -20° F