Posted: 25/05/2015 at 18:35
gosh - never thought I needed a greenhouse in France, but we are in the south.
In England I use my (cold) greenhouse for delicate things before they go out in the garden - currently pelargonium cuttungs, delphinium seedlings, and many other seedlings. I also overwinter my echeverias and non-frostghardy plants in there. Yours sounds more like a commercial polytunnel! My tomatoes, lettuce etc are all out in the garden.
Are you protecting your veg from heat or cold?