Glass for a sunroom/green house?

[MartyM]

I have plans to build a 14 x 24 in the Ozarks. I am thinking of adding a 12 ft sun room with a shed roof  to one of the 24 ft walls. I plan to insulate the sun room but it would not be heated in the winter or cooled in the summer.. I am thinking during the winter I can move the heat to the cabin with the use of some windows placed high and some floor vents between the cabin and the sun room. During the summer it would be shaded and I could just keep it open and vented.  I would like to put a 3 ft planter bed under the wall of glass for herbs and some vegi's... 

I have been keeping an eye out for some used or cheep double pain panels to use as John's plans show.

From what I understand single pain glass is better for growing plants than the double or triple pain insulated windows. Does any one have any experiance or thoughts on using single pain glass on a wall that big?  Am I just asking for condensation problems?

I spotted a great deal on Craigslist for enough 1/4 inch tempered glass to do the whole wall. I was just wondering if single pain would create more problems than a indoor green house is worth.

[MountainDon]

   This, from  http://hubpages.com/hub/greenhouse-glass-guide

You will need to consider your overall project budget, including your long-term heating and cooling costs for the greenhouse, to decide whether single- or double-pain glass is more appropriate. Single-pane tempered glass is a fine choice for low-budget greenhouse projects where heating and cooling costs are not major concerns. For projects where greenhouse heating and cooling costs are a concern, you'll be better off with double-pane tempered glass (or possibly triple-pane glass if you live in a particularly cold climate).

To maximize the heat-reflecting properties of glass in hot climates, you may also consider low-e tempered glass panels, which will block heat more effectively than regular glass.