Tunnel house, greenhouse and cold frame garden structures are all great choices growing plants in the winter, but what, exactly is the difference between the three of them?
Think of a greenhouse as a small room made out of glass or plastic.
A tunnel house is very similar in size to a greenhouse, but it is unheated.
A cold frame is the simpliest of these structures. It is nothing more than a box-like structure with a clear glass or plastic top.
Cool season crops and perennial plants do not need heat to survive the winter inside a garden structure.
Some garden structures run thousands of dollars, while others cost less than $25.
If you want to know more about year-round gardening or gardening structures, The Complete Idiot’s Guide to Year-Round Gardening, is a great book that covers all aspects of gardening indoors and out, all year long..