Sizeable, dense terminal spikes of rich purple flowers seem to jump right out of the bright silvery foliage of 'Purple Dragon'. This robust cultivar has the deepest purple, most snapdragon-like flowers of any Lamium. Flowering is heaviest in the spring, then continues sporadically throughout the season. Lamium makes an excellent, weed-smothering groundcover and is also a good mask for dying bulb foliage.
Lamium is an excellent plant to use in shady sites. It will be most attractive in rich, moist soil but is a tough plant, surviving in drier areas including under trees once established. Trim back in late winter. Stems will root into the ground where they touch.