3vo… The Walipini in ground greenhouse seems like an interesting idea. I just might have to try that. Thanks for the info.We have used them off and on over the years.
This enclosure in this image, winter 2003, was or largest hoop house and it was clear span.
The interior was water garden with a walkway along one side and end. We had a very small table and 2 chairs.
It had a metal spine made from electrical conduit and chain link fence pipe. The spine uprights slid into sockets set in concrete. This allowed us to pull the house down during the summer.
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More recently my wife has used simple ones to get her giant pumpkins started early in the spring. She used PVC pipe arches pushed onto rebar driven into the ground. Each pumpkin plant had its own shelter. Heat tapes in the ground provided additional boost.
We have gotten to where we want to keep plants alive all winter and plant to build a in ground green house aka Walipini.
I'm off 55, nearly halfway to Cape May from the Walt or Benny. Nothing elaborate with my vents...I use a pair of 8x16" foundation vents with sliding dampers. During the night when the heat is needed, they're completely sealed off with a piece of 1" thick foam.
I'm planning on using a couple of those vents in my tiny greenhouse that's a work in progress. Can you recall the name brand of the vents..?? The one's I've checked out online at the local big box stores don't have the best reviews. Some say their's work great, while others don't. But I've also read where some are adjustable temp. wise. Never used them, so don't have a clue.
