>Here is another thought. I made a "Greenhouse" with EMT >(Electo-Mechanical Tubing used for electrcal wiring in commercial >buildings) After years of experimenting, that's what I've been using for the last several years. >I made it just tall enough to walk in, I cover it with plastic. I use UV proof re-inforced plastic. It costs more, but I re-use it every year. I also use 1"x2" wood supports (ground to top center) every meter, with nylon tent cords over the plastic (we get some major winds sometimes, even over 120kph, like last weekend). >I also use this to help prewarm the soil and get plants out earlier in >the spring. That, combined with plastic mulch, is a big help. Tom