HEAT INPUT:
Try to redirect the "Clothes- Dryer Exhaust" into the green house (if it is
nearby). The heated air is moist and will add some heat.

HEAT LOSS:
More than heat input- heat losses must be checked.
I saw this in China as I traveled from Baotou to Beijing in last December.
The Chinese farmers don't have "the American style fancy green houses". The
just have little plastic covered half tunnels. What they do is cover the
plastic in a "rollable" blanket made of what looked like straw from the
train. They just roll it out in the morning.
So think of something to cover your greenhouse space with tarp or a blanket.

good luck

"Mary" wrote in message
news:vX1Jc.85568$XM6.77133@attbi_s53...

"nutNhoney" wrote in message
...
Mary wrote:

"nutNhoney" wrote in message
...

Glenna Rose wrote:


Because of a branch-breaking accident, I have started a tomato branch,

Our tomato growing season ends with the first freeze too. I bring as
many of the green tomatoes as possible and let them ripen on window
sills. I'm planning on extending the season this year by growing a
couple of tomato plants in the greenhouse. One website suggested
starting tomato plants in August to have for a late fall crop.


Wouldn't it be nice to have a greenhouse to extend the season! Does
anyone here grow greenhouse tomatoes in Zone 5?

It sure would be. My greenhouse is only 6' x 8' and I haven't decided
how
to provide additional heat during the real cold months. I'm hoping it
will extend the growing season by a couple of months on each end. I'm on
the edge of Zones 6a and 6b which is a little warmer than Zone 5. BTW,
there are several commercial greenhouses within our region. One grower
has a series of 5 greenhouses that are simply delightful to wander
through
on a cold winter day.

Mary

I'd be interested in hearing about the solution that you come up with, a
6'
X 8' space shouldn't be too difficult to heat.

Mary