The plant sale is selling beautyberry this year, and it sounds like a great plant to grow for fruit, so can I grow beautyberry if the water table is only about 1 foot down? It could just be the spring flooding that brought it up high.
If your water table is that high, you need plants used in marginal gardens.
Beauty berries are part of the Laminacae and are quite versatile. Here is the article from the RHS for more info. Callicarpa bodinieri 'Profusion'