How to Construct a Greenhouse

Wash all the bottles using the soap, water and tub. Cut the bottom ends off of each bottle, and remove the labels and lids. Allow the bottles to dry, and then string them on the grapestakes. Each bottle should be placed on the stake nose down. The next bottle should be pushed into the previous bottle as far as it will go. Completely fill each stake with bottles.

Dig out your greenhouse foundation with a shovel, and cover with landscape fabric to prevent grass and weeds from growing inside. Then use post hole diggers to dig out the holes for the foundation frame. Set the 4"X4" posts into the holes and brace them so that they are perpendicular to the ground at a 90 degree angle. Mix the Quickrete in the wheel barrow and fill the post holes with the mixture. Allow the Quickrete to dry and cure before continuing.

Create the frames for your greenhouse by mitering the 2"X2" timbers of wood at the corners and joining them with wood screws. Fill three of the frames fully with the pop-bottle stakes. Hammer these stakes to the frames at the top and bottom with fencing staples. Fill the fourth frame only halfway full.

Clear the screen and cross braces out of your screen door frame. Then fill the frame with the pop bottle grapestakes. Hammer these stakes to the screen door with fencing staples.

Hang the four frames from the 4"X4" posts with wood screws and a screw driver. Then hang the screen door to the half-filled frame with hinges, screw driver and wood screws.

Create triangular-shaped eaves for your greenhouse by mitering 2"X2" timbers at the corner. To get the maximum benefit out of solar radiation, make the degree tilt of your roof match the latitude measurement where the greenhouse will sit. Screw the eaves to the tops of the post supports. Use the remaining wood to create vertical supports that run down the center of the eaves, and a crossbeam.

Cover the sides of the eaves and the roof with bottle stakes, and hammer them in place with landscaping staples.