Options for insulating small greenhouses

[silken]

Could you lay sheets of plywood on the deck just for the winter and store them upright somewhere in the summer. Or even large firm slabs of foam insulation would be warmer. Since its not a huge area it shouldn't be too horribly expensive.

I have seen several guys in Europe on this forum who use the bubble wrap on the outside of the structure in the winter. Can't think of his name but we saw lots of pics when he was building his. I think he is from France. Also Kelo a member in Sotland I think here just built a greenhouse so he may have some ideas too.

I think the bubble wrap would work well.

I think its Kavanaru who uses the bubble wrap in france.