Star Red  patented and released in 1970 the Star Red was developed at Texas A & I  University's Citrus Center, Weslaco, by Dr. Richard Hensz.  Seeds of the seedy Hudson grapefruit, a little known Texas variety of the Foster Pink, were exposed to thermal neutrons, and a seedling from these developed a tree with distinct characteristics and fruit with redder peel and flesh than other varieties previously developed.