Who ever would have thought that oranges and grapefruit love the cold weather? Citrus is a winter crop, and while they’re not happy with freezing temperatures, they definitely like a chill. When the thermometer drops during the overnight hours, the cold actually makes citrus sweeter by triggering sugar production in the fruit. Unless there is a hard freeze in the area the fruit can be stored right on the tree until needed. There is hardly anything better than a fresh picked grapefruit eaten in the garden while the sun is rising up over the distant trees.