Heuchera 'Obsidian' is a hybrid cultivar of uncertain parentage, discovered as a result of open-pollination at a nursery in Oregon. Though the leaves are similar in shape to Heuchera americana and Heuchera villosa, it has a more compact habit than most Heucheras, and most distinctively, an extremely dark purple leaf that verges on black. 'Obsidian' blooms in late summer or early fall, putting up stems of highly contrasting white flowers. Very interesting as a container plant or for shade gardeners looking for serious contrast, though the leaf coloration likely precludes much value to wildlife.
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