Different types of bonsai species can be categorized into three main groups: tropical/subtropical species, deciduous trees that shed their leaves in autumn and go dormant in winter, and coniferous trees with needle-shaped leaves that stay green throughout the year. Each group of species has specific growth needs, particularly during the winter season. Some popular bonsai species, such as the Ficus, may have unique growing requirements compared to others in their category, and we offer further details on these distinctions.