The Citrus Calamondin, like all other Citrus species, originates from Asia. This cool orange functions best as an outdoor plant, but it is not completely winter hardy. In winter, it is therefore best to wrap the tree with a special tree cover. The Citrus Calamondin is an easy outdoor plant to take care of. Make sure you know the right care to enjoy your bitter orange for as long as possible! Citrus' soil should always be slightly moist. Water requirements will be higher in summer than in winter. The Citrus Calamondin is used to a lot of sunlight and it needs this to develop well. In the winter months it is important to use a tree cover or even bring the citrus inside for a while in case of extreme frost. A spot behind a south-facing window would be perfect in this case.