Spanish moss is a natural plant grown on trees in the Southern part of the country . Used as a decorative cover in plant containers and or baskets and floral arrangements . Spanish Moss is actually a flowering plant, and not a moss at all. It’s commonly found upon the Southern Live Oak, with its curly, threadlike, grey-green forms that grow up to 20′ long. Sold by the case about 5 -6 lbs on average depending on the moisture level.