Ruby Red Grapefruit has the most intense, red-colored flesh of any variety in our collection. Fruit is sweet the redder the flesh is and flowing with juice that is sweet with a hint of that classic grapefruit tartness. The fruit has very few seeds if any. Tart red-fleshed grapefruit is widely grown in Texas and Arizona. The high desert has the cold required for the development of the red color and the heat required to sweeten the fruit. Ripens late winter through mid-summer.