Hello Gardeners, I’m Amanda McNulty with Clemson Extension and Making It Grow . A cultivar is a named variety of a particular plant that was selected or breed to have certain characteristics, often they’re vegetatively propagated so all the plants with that name are exactly the same. It used to be that people often planted seedling dogwoods in their yards and the only downside was perhaps waiting a long time for the trees to bloom. But today there are many diseases of dogwoods – anthacnose,