In the world of modern garden plants, it has become increasingly common for a simple species designation to be deemed insufficient. No longer does “sugar maple” or “common lilac” cut it. Most of our garden plants are represented in the trade by dozens, and in some cases thousands, of named selections (last time we checked, there were more than 40,000 named daylilies). These selections, or cultivars (cultivated variety in horticultural parlance), may differ from the typical species in any number of characteristics from flower size to disease resistance.
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