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market-farming - Re: Greenhouse/Johnson grass

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  • From: Alex McGregor <waldenfarm AT sprintmail.com>
  • To: market farming <market-farming AT franklin.oit.unc.edu>
  • Subject: Re: Greenhouse/Johnson grass
  • Date: Thu, 01 Feb 2001 13:52:07 -0500


I helped a neighbor in Cincinnati build a passive solar greenhouse (lean-to)
on the side
of his house, maybe 20 years ago. I worked as a manager of the food co-op
and saved the
rectangular metal cans that cashews came in- about 12" square by 24" tall.
He painted
these flat black, filled with water and stacked them on part of the back wall
of the
greenhouse.

They worked really well- he had tomato plants survive and produce in -20
weather. But
just the ones right next to the cans. This probably worked because he had
"cells" of
water storage instead of 30 to 55 gal. drums- thermal layering may not be an
issue in
cells- and he had the long dimension exposed to direct sunlight.

Alex McGregor
Walden Farm




  • Greenhouse/Johnson grass, Joel Bush, 02/01/2001
    • <Possible follow-up(s)>
    • Re: Greenhouse/Johnson grass, Alex McGregor, 02/01/2001

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