i figured out the GH part ... i have always said.. fear your success .. lol .. what id your zone or location .... if i had that much excess .....i would surely experiment ... as we cant really forecast your weather ... ken PS: got a direct note.. you were right rhizo ... but i still dont know what it is .. off to google ... how about that zone info?

I bought one years ago so i can't help you with brand or current cost. But I bought enough in bulk to cover the top and front(south facing). I cut it into manageble pieces for 1 person. Sewed on edge fabric(to protect all edges) and installed my own brass grommets. I used a simple pulley system outside the GH for the roof area. I used j-hooks for the side(spaced approx 2ft apart). Mine are black,but the shading percent will depend on whats in the GH during the summer. sorry if this isn't much help. I start my new HFGH project tomorrow(foundation plan an layout).

It looks as though your panic attack has subsided. Good. I have had the 6x8 for some years now (I think four?) and still enjoy it. Would love to move up to the 8x10 but not sure if there's room for it. So, lucky you! I'm 5'7" and placed mine on a foundation of 2x10's for a little extra height; there is room to work without stooping and I don't mind having to step over the threshhold. My greenhouse is in a somewhat protected spot, with a large white oak to the west, a fence and naturalized area to the north and garden shed to the east, but I've not had any problems with wind. It is neither tied down, with minimal anchoring at the corners. We did, however, run two protective layers around the perimeter inside - under the gravel and up along the foundation: first a layer of hardware cloth to exclude burrowing animals that may wish to overwinter there, and then a layer of Reflectix insulation to exclude drafts. A couple of years ago I swept the gravel off to the sides and set a gray paver walkway down the middle (I'm an incorrigible barefoot gardener). There are several options for shelves. Someone posted photos of shelves secured to center posts at each end. Very nice. Mine are white cedar on the cheap: a local manufacturer/retailer/installer of fencing materials sells their picket fencing seconds for $10/3'x8' section. Cut off the pickets ends outside the two horizontal rails, and we had a bench top just the right size. Our winters are probably a little warmer here in coastal NJ than your RI winters, but I use the GH all winter. We put on its winter coat, a clear solar pool cover, in early November, and the 1" foam insulation panel on the north wall stays up year 'round. The insulation panels on the north 1/3 of the east and west walls, like the strip of Reflectix insulation on the lower part of the north roof, come down in spring. I overwinter tender perennials, grow some veggies and herbs through the winter, rotate house plants through for R&R, have a few orchids, start forced bulbs, start other rhizomes/bulbs/tubers for spring planting outside, and grow some seedlings - most are wintersown, but the tomatoes have to be started inside because I just can't wait for that first fresh, home-grown Jersey tomato! My husband enjoys the greenhouse, too ... no, he's not a gardener, he just likes to sit out there and read, lol. Not a bad idea to leave room for a chair while you're planning your space. That greenhouse will be arriving soon ... good luck and enjoy! (And please keep us posted.)

Before going through all that hassle why not just buy a HFGH? That is Harbor Freight Green House. They cost as little as $300 for the 6 x 8' one. The larger size kit is 10 x 12' for only $600. They're attractive and can be moved if necessary.