If you only have room for one Heuchera then it has to be Obsidan! Its shiny, deep, dark plum foliage is stunning. This Heuchera is more or less evergreen but it will lose some of its leaves in winter in more exposed gardens. The flowers in summer last for absolutely ages, they are a lovely contrasting cream colour on fine stems. Heuchera look perfect in the front of the border mixed with other herbaceous perennials where they will add depth of colour and layers of interest. This is the ultimate 'low maintenance' plant!
Plant in full sun- part shade, in a well drained, not too dry soil.