You'd never put table salt on plants, which would kill them. Rock salt from icy roads damages plants, too, and so does the salty spray that comes off the ocean in coastal Pencil Cactus: Indoor Plants Calloway's Nursery Meet groundnut (Apios americana) a native perennial vine with a surprisingly nutty, slightly sweet flavor! Both its tubers and seeds are edible (just be sure to cook them first). Groundnut Top 5 Plants for beginners Gharko 7th Anniversary Just Wool Roses