Growing
Growing a grapefruit tree requires a commitment to warmth, as even a light frost can kill the plant. If you are planting in the ground, ensure your soil is well-draining and maintains a slightly acidic pH between 5.5 and 6.5. Because these trees are sensitive to cold, those in cooler regions may find success growing them in containers, which allows you to move the tree indoors when temperatures drop.
When your tree reaches maturity, you must harvest the fruit when it is fully ready to eat, as grapefruit does not continue to ripen once it has been picked from the branch. Depending on the variety you have chosen, such as the deep-colored Ruby Red or the paler white varieties like Duncan, the flavor profile can range from highly acidic to a sweeter, tart balance. Once harvested, keep the fruit unwashed to help it last longer. For the best quality, store your fruit in the fridge or at room temperature.