Laaz, I agree that grapefruit are a heat loving variety. However, this tree is grown inside a large greenhouse, with day time temperatures in the 80s and night temperatures never fall below 55-F. Anyway, we shall see what we shall see. I'm interested in tasting the next fruit. The reason I grow Marsh, which is a seedless white variety, is because I like white grapefruit. These days all one can find in stores are red grapefruit varieties.