Judith in France wrote:
You will remember we lost 2 greenhouses to the gales a couple of years
ago. ?Last year we had this constructed, it's my husband's design and
his choice of materials was spot on. ?I love being in there. ?What can
I grow in there unheated, in the Winter? ?Remember we have snow and
ice for long periods of time.

I overwintered potatoes in the greenhouse this year, and they were lovely.
Just finished eating them. ?Any good?

Definitely, although I will need advice about watering during Winter,
can you recommend a variety?

I used a whole bunch, they were leftovers and ones that had been picked and
were green and would otherwise be thrown away. I didn't water very often
over winter, but they didn't come up till early spring. Then I just threw
some water on each time they looked /really/ thirsty. When they grew taller
I put the bottomless tomato pots over the plant and threw some soil on top.
One ended up 4 pots high. :-)