Depending on the vendor you get your seeds from, this has been described as either an annual or a perennial. I have a container of Emerald Falls that I started several years ago, and it is still growing happily on my enclosed back porch. I set it outside in the summer and it has produced a goodly number of very small, almost unnoticeable white flowers, which in turn produced seeds. I haven't yet tried germinating them, but I have no reason to believe that they won't be viable.

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