Nursery industry magazines to garden centers: Latin names confuse your customers. Use happy, easy, common names.
Garden center to nursery industry magazine: Our customers are smarter than you think, and besides, Latin names are cool.
The Garden Latin Club meets here: the golden gecko garden blog: Latin Names
And oh, by the way–a darned useful book to have is Gardener’s Latin by Bill Neal.
And…based on another very useful comment…the Fine Gardening Latin pronounciation guide.