Healthy soil and sustainable growing

[Dieter Brand <diebrand@yahoo.com>]

Zack,

 

I wasn’t talking about using glass for the greenhouse;

you can use any material that suites your purpose.

What I meant was the glass panel installed in front of the

trombe wall used to heat the greenhouse. It may be possible

to use some kind of plastic material for this purpose too,

but I think that the inferior transparency of most plastic

materials is likely to have a negative impact on the amount

of heat absorbed.

 

The type of passive heating you use in the end will depend

very much on your requirements and on local conditions. In

my case, I just need to keep temperatures a few degrees above

the surrounding air to keep my plants from freezing during

the few nights we have night frost. To achieve this, I want

the simplest method possible, preferably without any mechanical

parts or electronic gadgets which can break or deteriorate

in adverse conditions (e.g., humidity, etc.).

 

Do let us know your views on irrigation.

 

Regards,

Dieter Brand, Portugal

*********** REPLY SEPARATOR ***********

On 2/24/2007 at 7:38 PM Zachary Domikez wrote:

... snip

 

>As a corollary, Dieter mentioned glass, which is very
>expensive, breakable and heavy, so I have used vinyl
>(not green in it's fabrication, no, but useful in
>construction.) By Vinyl, I mean the flexible roll, UV
>resistant, usually sold for tent or truck windows. I
>have found this to be twice as long-lasting as
>polyethylene.
>
>Next critical subject is 'irrigation,' for another
>day.
>
>Best,
>Zack

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