Ruby Red Grapefruit tree is a great option to plant in your yard if you are after a fruit that is a perfect balance of sweet and tart. This particular grapefruit tree is also drought tolerant and naturally pest resistant making it one of the most low-maintenance citrus trees to grow. The Ruby Red Grapefruit tree, like any other grapefruit tree will need to grow in an area that will give at minimum 8 hours of daily sunlight in order for the tree to produce to its full potential. The fruits from the Ruby Red Grapefruit tree will begin ripening anywhere between May and October depending on the location they are planted. (USDA Zones 8b-11b)