Don't try putting the green house plastic on when it is windy out. As you can see, a half covered greenhouse makes a great sail.
Here it is all covered. We attached the plastic to the frame by taking PVC pipe in a slightly larger size than the metal frame, cutting it into 12" sections, splitting those in half, and sandwiching the greenhouse plastic between the metal frame and a pvc piece and securing with 2 screws in each pvc piece. They are spaced about 2' apart. You can see the black pvc pieces along the frame in the picture above. We are leaving the ends open so that it will be a cooler greenhouse than the other one. It gets over 100 degrees in the enclosed one on an 80 degree day, we will dedicate the enclosed green house to super heat loving vegetables like the tomatoes, cucumbers, okra, and peppers. The new greenhouse will have things like corn, lettuce, and beans.
We planted the corn, beans and lettuce already. They are being hand watered until we get the irrigation lines set up. The irrigation lines consist of a 3/4" header pipe with T-Tape running down the rows. We get all of our irrigation supplies at www.dripworks.com. It is fairly inexpensive unless you include shipping to Alaska. That usually doubles the cost.