Blog Extra, History of Tensas Parish, Local, Newellton, Portfolio, Tensas Posted on July 7, 2021 by libraryadmin This postcard is dated April 3, 1966. Lavender tulips, yellow pansies, jonquils, anemones, and flowering plum trees grace a garden path beside the River Road (Hwy. 65) in Tensas Parish, near Louisiana’s famous new Dutch Gardens. Tags: articles, Dutch Gardens, grid, Tensas Parish Share: