If you have limited space and will only need a greenhouse during the winter, then purchase one of the portable greenhouses. This type of greenhouse is small, affordable, lightweight, made of plastic that resists tearing, easy to assemble, and can be dismantled when not in use. It comes complete with a built-in zippered door, sturdy steel frame, windows with screened vents, and storage bag. Most of these types of greenhouses include an anchoring kit to help stabilize it during bad weather. When storing your plants the greenhouse is able to hold two shelves on either side. You can locate these greenhouses on the internet or at your local greenhouse dealer.