• Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education skip experiences global resources the cider press projects digital market permies.com private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Nicole Alderman
  • r ranson
  • Anne Miller
  • Pearl Sutton
  • James Freyr
  • Mike Haasl
  • paul wheaton
  • Dave Burton
stewards:
  • Joylynn Hardesty
  • Jocelyn Campbell
  • Joseph Lofthouse
garden masters:
gardeners:
  • Carla Burke
  • Steve Thorn
  • Eric Hanson

How to make a greenhouse work in Zone 7B

 
pollinator
Posts: 417
Location: Huntsville Alabama (North Alabama), Zone 7B
51
fish fungi foraging bee building medical herbs
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Has anyone used a greenhouse all year in a Zone 7B?  I am wondering if shade cloth. venting and heating is all I would need or should I go further and look at ground heating/cooling?  I get around 5 to6 hours of sun in this location.

I have a high water table but also a lot of boulders just below the surface (2 to 3 feet).  Summers are brutal June through August and there is a short winter where a couple of weeks it gets around 20F or lower.

I am willing to spend a couple thousand to build something that will last and maybe keep insects out and am looking for innovations.  Air to water heat exchange or other?

How to make this work?

Thanks
Dennis

 
master steward
Posts: 5624
Location: Northern WI (zone 4)
1548
hunting trees books food preservation solar woodworking
  • Likes 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi Dennis, I'm guessing many people have greenhouses in your climate.  I saw a tropical greenhouse on youtube in Texas that seemed pretty simple (from a mechanical systems perspective).  I guess the biggest question is how warm do you want it on your coldest night and how warm do you want it on your hottest/sunniest day?  That could help generate some ideas.  If all you need is 33 degrees on the coldest night, I'm guessing some thermal mass and a double inflated poly hoop house would do the trick.

Keeping insects out could be trickier.  My greenhouse vents in the summer so the bugs come and go as they please.  
 
gardener
Posts: 391
Location: Piedmont 7a
117
hugelkultur trees woodworking
  • Likes 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I think shade cloth plus moving air (natural breezes or fan) should keep it reasonably cool in summer. Am in 7a and have a neighbor who keeps a greenhouse with a fan that way - have been in it and it is bearable.  
 
No matter how many women are assigned to the project, a pregnancy takes nine months. Much longer than this tiny ad:
Food Forest Card Game - Game Forum
https://permies.com/t/61704/Food-Forest-Card-Game-Game
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!