Regardless of the size of greenhouse you choose, all of them operate in essentially the same way by providing optimal sunlight and consistent temperatures for the plants you're growing. While not all plants grow equally well under identical conditions, a greenhouse allows you to tailor the environment to suit specific types of plant material. Just like commercial greenhouses, mini greenhouses are available in a variety of different shapes, sizes and configurations. There are extraordinarily simple greenhouses and those that integrate more advanced climate controls to help maintain the proper environment.
When choosing your mini greenhouse it's all about asking yourself what you expect of the structure once it's been built. How many plants do you expect to keep and what types of species will you grow? Are you simply looking to provide shelter from frost or do you want to provide year round warmth? These are just some of the questions you should be asking if you're considering a greenhouse. You also need to determine how much space you have to install the greenhouse, keeping in mind that you'll want to locate it in an area that receives uninterrupted sunlight throughout the day.
For more information on mini greenhouses you're best bet is to head online where you'll find plenty of specialty retailers of greenhouses and greenhouse accessories. Online retailers provide you with the perfect opportunity to take a look at what's available in terms of different types of structures as well as price.