Interested in Building
Your Own Greenhouse? Here is How --
2" x 12" planks for sides
of raised beds. Redwood is recommended.
2" x 4" lumber for
top ridge beam, center frame, door, end framing and
bracing between beds.
Steel T-type fenceposts to cut for
staking beds against pressure.
20' x 1/2" steel rebar for
20' x 3/4" PVC pipes for hoops.
3/4" metal pipe pipe hanger
brackets with screws.
Sufficient 3-year rated,
UV-resistant greenhouse plastic to cover length plus
ends without seams. A 10' x 32' greenhouse
will require 50' of 20' wide material. It will
come in a 100' roll, leaving enough to replace it
after 3 years or to cover another one.
Rabbit or gopher wire and U-nails to
protect beds from burrowing critters.
Soil mix to fill the beds.
make the greenhouse shorter or longer, subtract or add
hoops and planks. Since the rebar, PVC pipe and
plastic skin come in 20' maximum lengths, the width of
the greenhouse will be set at 10' when the arch is 10'
high in the middle. You can get wider floorspace
by lowering the height and a taller greenhouse by
narrowing the width.
you do not need raised beds (for example, you want
potting benches inside instead) make the frame out of
all 2x4s with bracing going from one side to the other
along the floor.