Propagation: When to move seedlings out to a cold frame/greenhouse?, 1 by trc65

trc65 wrote:
Here is a picture of my coldframe, you can see the blue jugs of water lined up in the back of it. The size is 3' x 6' with the back 22" tall and the front 12" tall. It is made of scrap 2x6 and 2x8 lumber. The top two covers are just 2x2 lumber with plastic stretched across and hinged in the back. The bottom is gravel for drainage and to keep the wood off of the ground. I kept the front at 12 inches so I could line up plants in the very front of it to shade young plants. I can comfortably fit 9 flats with some room for other things in pots. Unlike some who will use movable cold frames in their garden to extend their growing season, I use mine only for potted plants. I do use it in fall to protect some things in baskets from early frosts.