Assemble a Greenhouse Kit

eight 12-foot 4x6 landscape timbers
one box landscape spikes
10-pound bag white gravel
three 12-foot 4x4 posts
12 10-foot pressure-treated 2x4s
15 10-foot 1-1/4x6 pressure-treated decking
greenhouse kit

Tools:

3-1/2 inch galvanized nails
air compressor with hoses
framing nailer
hammer
level
line level
measuring tape
pencil
power miter box
rakes
safety glasses
shovels
string line

1. Greenhouse kits require a simple foundation, basically a perimeter of landscape timbers with a gravel floor. Based on the measurements given in the kit, make a square, level perimeter of 4x6 landscape timbers (figure A).

2. Nail the landscaping timbers together and spike them to the ground using landscape spikes. Check for square by measuring opposite diagonals. When the diagonal measurements are identical, the box is square.

3. Lay down landscape fabric to eliminate the weeds, then dump in 4 to 6-inches of gravel (figure B). This will assist in drainage.

4. Following the manufacturers instructions, assemble the greenhouse kit (figures C and D).

5. If desired, build and secure workbenches for the inside of the greenhouse. Bolt a 4x4 post to the landscape timber bottom frame. Then, make a perimeter of 2x4s. Next, make an inner perimeter of 2x2s, measuring 1-1/8 inches from the top of the 2x4 frame. This will give you a ledge to set the shelving boards on. Once that’s done, just lay in the shelving boards.