Answer: Plants that are listed "grow as an annual" usually refer to a plant that is outside of your hardiness zone. For example, some folks can grow fuchsias or petunias as perennials, of course, in OH, this isn't a possibility. Conversely, some folks must grow things like Delphinium, peonies, or even roses as annuals where you could grow them as perennials. Some plants are only perennial in very specific areas so, though it may be listed as a perennial, the package of seeds/plant tag, etc., may suggest it be grown as an annual because it is so difficult to grow as a perennial except in very limited areas. If a plant is listed as "grow as an annual" it is probably not going to make a command performance next season though it certainly isn't impossible.
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