“If you are like me and are crazy about perennials with dark foliage, you’ll go absolutely ‘ga ga’ over Heuchera ‘Obsidian.’ The glossy leaves on this 16-inch mound of dark purple appear almost black, ...

caught fire around the turn of the century (that's the 21st century), but I just didn't feel the heat. I wasn't being a snob. Every year, a dozen new cultivars showed up at the nursery. So many were ...