If you live below Zone 8, bring your potted olive tree indoors in winter (once the temperature hits below 20 degrees). You’ll want to gradually transition your tree indoors to avoid any shock. If possible, move your tree to a covered porch for a week before moving it indoors to help it acclimate to warmer temperatures. Once indoors, place your tree by a sunny window and continue watering it regularly. Learn more about bringing your olive tree indoors.