We know the flowers being used and the expert in charge of the blooms (top florist Philippa Craddock), but we don't know the color scheme. One of the royal picks is getting everyone guessing at something other than traditional white. While foxgloves do come in creamy shades, this cottage garden favorite is better known for its bright hues, like mauve and pink. It's also highly poisonous, so presumably is going to be hanging high up in the church rather than nestling next to the flower girls. Putting that aside, in the Victorian language of flowers the foxglove means "protection" — a sweet promise for newlyweds to make to each other as they start married life.