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Old 08-19-2011, 12:02 AM
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BrendonTW BrendonTW is offline
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Join Date: May 2009
Location: Oklahoma City
Posts: 525
Landscaper - Would like to build a small greenhouse for annuals

I would like to construct a small green house for raising only annuals in. I probably only need 200-400 square feet. Especially if I can build two levels for the plants.

Just looking for some advice. I know nothing about greenhouses or nursery raising. I can think of climate control and irrigation as essentials. What else am I looking at in getting this thing going? Would you recommend anything specific for the walls/ceiling of the thing? Plastic? Canvas? I really have no idea where to start.
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Old 12-18-2011, 04:47 PM
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JFGLN JFGLN is offline
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Join Date: Mar 2004
Location: Olympia, Washington
Posts: 899
Did you build a greenhouse? I just bought a kit from Oregon Valley Greenhouses.
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Old 12-19-2011, 07:32 AM
allinearth allinearth is offline
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Join Date: May 2005
Location: Arkansas
Posts: 608
I ran some numbers a few years back when I was considering growing some annuals. I couldn't see any profit in growing on a small scale like you are talking. I guess it could be different in other areas depending on what prices local growers are offering. But if you are determined my advice would be to look for used greenhouses at a bargain. That way you have less to lose.
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Old 12-19-2011, 07:50 AM
ArenaLandscaping ArenaLandscaping is offline
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Join Date: Jan 2011
Posts: 230
Growers Supply has EVERYTHING that you need to build your own greenhouse. They have greenhouse kits in case you decide not to build your own.
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Old 12-19-2011, 07:30 PM
ArenaLandscaping ArenaLandscaping is offline
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Join Date: Jan 2011
Posts: 230
Here are some plans for building a greenhouse, greenhouse benches, and a propagating frame.
Attached Images
File Type: pdf Greenhouse Plan 1.pdf (1.13 MB, 71 views)
File Type: pdf Greenhouse Benches.pdf (617.9 KB, 36 views)
File Type: pdf Hot Bed-Propagating Frame.pdf (667.2 KB, 45 views)
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Old 12-21-2011, 11:13 AM
ArenaLandscaping ArenaLandscaping is offline
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Posts: 230
Hotbeds and cold frames for starting annual plants-

PVC Greenhouse-
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Old 02-12-2015, 12:57 AM
forman forman is offline
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Join Date: Apr 2006
Location: Bridgeport, Connecticut
Posts: 13
greenhouse kits

I built a small greenhouse from 2x4 and poly carb panels that I purchased locally. It is arounf 125 sq. ft. It works ok but I just put up a Harbor Freight Greenhouse 10x12. This kit I purchased for 575.00 and it is not the best kit in the world. It takes some work to support it for snow and you have to do some work to keep the panels from blowing off. If you go on Garden and put in Harbor Freight greenhouse you will be able to see what I mean. There are many people who have purchased one of these and we all share problems and fixes. You can contact me and I can explain about the kit. At this time I have mine all set for growing, Lights, benches all materials needed except I am still researching a good heat source. With all the snow we have been getting and the cold you need a good source of heat. So far so good. I clean my greenhouse of snow on the roof during the storm and I have been lucky. I put alot of extra support and other things to make it sturdy. Hope you choose the right kit but so far I think this one will make me some money.
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Old 02-12-2015, 09:36 PM
windflower windflower is offline
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Join Date: Feb 2013
Location: wilmington nc
Posts: 1,078
You can build a hoop house very cheaply if you have the time. Mine is 20 x 50 and the frame only cost $250. I think my last order of greenhouse plastic was about $500. You need uv stabilized plastic if you go with plastic. Spend the extra $ and get the ir film it will make a huge difference in your fuel bill. A propane heater is the easiest to install, usually the most expensive to run. This year prices are way down though. Occasionally you can find a modine hot dawg heater (used in warehouses & garages) on craigslist but they probably have an aluminum heat exchanger rather than stainless steel (preferred).
I have a picture of mine on my website. If you want building instructions let me know.
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