Thank you, Steve. I think the musing was more retorical. I'll have to stick the thermometer in and keep an eye out for high/low temps for a few days. This weather is pretty close to our winter weather already.
Nice greenhouse. That's about what I'd use for mid-spring on to start seedlings or late fall to extend the growing season, but never expect it to keep things going during the winter.
What I'm talking about is a 4-shelf zip-up-plastic mini-unit INSIDE my already at least 40 degrees sun room. With the lights added, the mini-unit should stay quite a bit warmer.
I should have known, Steve. I thought I recognized the hands.
And I thought your greenhouse was a sort of lean to on the side of a long skinny building. That wouldn't exclude you having another greenhouse though.
Tap the picture a couple of times, @Smart Red . You will see that it is a bean volunteer .
Yes, the bean and 2 of his brother beans were there 3 hours ago, when I took the picture. It's been 26° in the greenhouse, maybe colder. The one time I checked at that temperature ... under the low tunnel it was 38°.
It's kind of dim and dreary in there most of the winter. They look like the ones I set up on the lawn, come spring! (Without the green grass, bright sunshine and tomato plants .)