Tired of waiting to garden. With a cold frame you can start salad greens much earlier and grow them much later and in some areas you can even grow them all through the winter. Kale actually gets better tasting after a frost.
An Easy Cold Frame Design
http://www.greenfootsteps.com/cold-frame-design.html#sthash.b8eD2fAF.3Y7YGC62.dpbs
Juwel Oversized Cold Frame 1500
Genesis Cold Frame 3x3FT
Cold Frame Greenhouse