tallslenderguy
Newly Registered
Posts: 4
Joined: Mon Nov 06, 2017 10:06 pm

greenhouse on raised perimeter

Hi all,
New to this group and did a quick search, but did not find this topic in particular. I've been growing organically for over 30 years, owned a few farms as well, but have never had a green house. I am now living in an urban setting in Oregon USA and would like to have a small greenhouse to go with my 9 4x10ft raised cedar beds. I have a great space that will accommodate a 8x12 foot greenhouse. My idea is to build two raised beds (probably 30"x12') with a center aisle, with a 4' bed across the back. What i would like to do is have beds that are about 30" high (made from 2x12 cedar) and utilize the beds as the perimeter walls. I'd like to purchase a kit greenhouse to set on top of the perimeter bed walls, which would raise the overall height of the green house. The height of the beds would depend somewhat on the greenhouse I am setting on them.

The challenge i am finding is that most kit greenhouses are set on a metal base that runs the entire perimeter, including the door. I would need to lower the door to account for the raised perimeter foundation and am looking for a kit greenhouse that would work for that purpose without having to build the whole greenhouse from scratch. I'm sure I'm not the first to think of this, but an online search has not produced kits that i could use in this way without doing some cutting on the kit foundation. wondering if anyone knows of kit greenhouse that does not have a threshold that is incorporated into the greenhouse base?
thanks

User avatar
applestar
Mod
Posts: 27482
Joined: Thu May 01, 2008 11:21 pm
Location: Zone 6, NJ (3/M)4/E ~ 10/M

Re: greenhouse on raised perimeter

OK — my immediate thought was why not just make it a sunken greenhouse... then I was thinking Oregon... do you get too much rain?

This is just one example I quickly pulled from the net. But obviously there are other examples. I’m thinking not quite as deep as the example. Basically, the greenhouse would sit on the ground level, and your path would step down so you still have sort of raised beds, but the subterranean configuration is supposed to moderate the temperature extremes, I believe?

Image
Learning never ends because we can share what we've learned. And in sharing our collective experiences, we gain deeper understanding of what we learned.

User avatar
ElizabethB
Super Green Thumb
Posts: 2109
Joined: Sat Nov 24, 2012 5:53 am
Location: Lafayette, LA

Re: greenhouse on raised perimeter

Why not build a conventional - ground level greenhouse with boxes inside? Line your walkway with commercial grade landscape cloth then top with road gravel. Helps with the drainage.

Good luck.
Elizabeth - or Your Majesty

Living and growing in Lafayette, La.

When weeding, the best way to make sure you are removing a weed and not a valuable plant is to pull on it. If it comes out of the ground easily, it is a valuable plant. ~Author Unknown

tallslenderguy
Newly Registered
Posts: 4
Joined: Mon Nov 06, 2017 10:06 pm

Re: greenhouse on raised perimeter

Hi guys,
Thanks for responding.

I have pretty much already decided, for a variety of reasons, that I want to have the greenhouse on a raised perimeter, so not really looking for suggestions on other ways of doing greenhouses. The dug out GH is interesting, but won't really work in my backyard because of pipes. The truth is, I do not really want a dug out GH either.
I'm tall (6'5"), and I also am going to be growing indeterminate tomatoes as one of the crops and they can get pretty tall, so I am looking for ways to make taller sidewalls and a taller greenhouse overall, a perimeter foundation looks good to me.
As noted in my original post, i think i can get away with buying a fairly inexpensive <$1000 8x12 kit and mounting it on top of a perimeter foundation. The only real challenge i see to doing that is the door. It seems most reasonable to lower the door to ground level and fill in the space it leaves with similar twin wall polycarbonate, the only impediment i see to doing the though is the perimeter base that comes with GH kits runs under the door as well, so that would have to be cut out if I used a kit. Was mostly wondering if anyone knew of a kit GH that didn't have the base running under the door. :-)
thanks

User avatar
MoonShadows
Senior Member
Posts: 150
Joined: Mon Dec 11, 2017 9:50 am
Location: Stroudsburg, PA - Zone 6a

Re: greenhouse on raised perimeter

I would not suggest building the greenhouse up and using the outside of your raised gardens as the lower part of the greenhouse wall. Unless you insulate the inside or outside of the raised gardens on the side facing out, you are going to have some mighty cold soil in those raised gardens when the weather is cold. You would be much better off building a separate perimeter wall and keeping the raised beds inside the greenhouse. As far as the door, cut the frame there, secure it well where you cut it, creatively figure out how to build a lower extension onto the door that comes with your greenhouse, or dump that door and create your own.
https://MoonShadowsFarm.com Good Eats & Treats from the Pocono Mountains
"Go confidently in the direction of your dreams. Live the life you have imagined." ~Henry David Thoreau

  • Similar Topics
    Replies
    Views
    Last post
  • Looking to put up a greenhouse
    by Raine » Mon Oct 26, 2015 3:57 pm » in Greenhouse Forum
    7
    9614
    by babybirdblue
    Tue Nov 10, 2015 8:02 pm
  • New greenhouse
    by Susan W » Fri Feb 05, 2016 9:49 pm » in Greenhouse Forum
    6
    3246
    by Allyn
    Wed Mar 23, 2016 2:26 pm
  • My first Greenhouse
    by amrap1956 » Sun Nov 05, 2017 9:53 pm » in Greenhouse Forum
    7
    900
    by MoonShadows
    Tue Dec 26, 2017 11:23 pm
  • My New Greenhouse
    by JosephsGarden » Sun Nov 29, 2015 2:08 am » in Greenhouse Forum
    12
    4077
    by lakngulf
    Sun Jan 24, 2016 4:01 pm
  • greenhouse floor
    by drh146 » Thu Apr 07, 2016 1:38 am » in Greenhouse Forum
    2
    1604
    by Allyn
    Fri Apr 08, 2016 6:57 am
  • Exhaust fan in a greenhouse
    by Greenhousesalsa » Sat Apr 16, 2016 10:16 pm » in Greenhouse Forum
    7
    1899
    by imafan26
    Tue Dec 12, 2017 4:29 am

Return to “Greenhouse Forum”