I lived in a neighborhood for a long time that had a small community grow house where each family paid for a certain amount of space to house the plants of their choice. Though it was a great experience and I learned a lot from the old timers who knew far more than I did about growing plants in green houses, I have to say that having my own backyard greenhouse has been my ultimate gardening experience.
I love that I have all the space to grow all the vegetables and herbs my family likes to eat and I like to cook with but I also start my annuals and have them ready to plant just as soon as the last frost is out of here. Last year I housed all my patio plants as well as grew a variety of lettuces, spinach and some cabbage year round. My friends were so impressed with my fresh herbs and salads throughout the winter months that I think several of them are considering purchasing their own greenhouses very soon! I, for one, am all for it!