In the rush to cross everyone off our holiday gift lists and to select the most suitable decorations to create the perfect ambience within our homes, we may overlook the importance of the plants that make this time of year so cheerful. Let us look at three such winter-themed plants to see how they each contribute to the long-standing custom of using live greenery indoors. Christmas Tree Germany is credited with decorating trees as far back as the 16th century and later, bringing the tradition to Pennsylvania when they immigrated. It wasn’t until the early 20th century, however, that this custom of bringing living trees inside and adorning them with…