Another favorite for lovers of wild, unkempt gardens, the Prunella grandiflora brings the type of freshness synonymous with a private sanctuary. Known more commonly as the Large Selfheal, its colour variety includes pink, purple and violet, and with thick, large leafed, dark green foliage, it makes for an ideal choice of ground cover. The Large Selfheal loves moist conditions, and given enough encouragement will spread quickly and thickly. So, if you have a large garden and prefer an informal style, it’s a good choice to let loose.