Enhancing your greenhouse is a bit different than decorating or redesigning your home. It is a very specific type of enhancement, much unlike anything you’ve probably done before. You must purchase accessories that will actually benefit your greenhouse, and not just improve its look. First, let’s consider the way a greenhouse is designed. It is typically made of glass, or plastic. This is because it allows the heat to come in from the sun and warm the plants, soil and other things within the greenhouse.