Boxwood (Buxus) is a very hardy plant and grows rapidly as well. These great characteristics make it a good tree to use as bonsai. Boxwood has more than 70 species and the common boxwood is the most popular. This is highly used as an ornamental plant and is grown and shaped into a variety of designs.With care this species can be kept indoors. Mist spraying and a cool room are recommended.If cool environments such as shaded porches, conservatories and sun rooms can be provided, they likelihood of success is increased. These may be too hot in summer, when the tree should be moved outside.The tree performs very well outside but does need protection in winter.