That's great Bert.
for a calm day on Wed.
Sometimes I have grown brassicas in a tunnel and they have been wonderful - too wonderful sometimes as this year my brassicas are HUGE and shading out everything else, but in other years they have died off.
I grow my climbing beans - actually all my beans - in the tunnel as it's just too windy outside for them, which makes the plants and the beans twisted, gnarled and scarred. You need to pay attention to ventilation and pollination inside the tunnel with beans, so choose good setters and spray the flowers with water regularly.
I have had varying results with growing peas inside. Most years they hate it, but this year I have a good crop.
I find that lettuce need very good spacing and shade to do well indoors or they rot, even with watering them only from the bottom. They don't tend to get slugs though. Other salad greens do well.
Pumpkins and squashes love being grown in a tunnel if you can provide the water they need. Few slugs, lovely and warm, and crop bars to run along, which means they can grow as big as they want but be out of your way. I've never had such big squashes as when I grow them inside.
This year I have grown my onions and garlic inside. I haven't cropped them yet so the jury's still out, but the onions are looking promising. I don't know about the garlic yet.
One crop which simply doesn't grow outdoors here is sweetcorn, so for years I grew it in the tunnel. Initially I had a fair but not bountiful crop, but then the mice discovered them and hollowed out the cobs before I could pick them. The other main problem with sweetcorn inside that I've found is that the pollen coats absolutely everything, then grows that black mould, so not only does the sweetcorn itself suffer, but so does everything else. I didn't grow any last year or this year.
Of course I also grow the obvious stuff such as tomatoes, cucumbers, chillies, peppers, sometimes aubergines, inside, but I have never tried a grape vine. The aubergines are in the greenhouse (which is inside my tunnel) and sometimes so are the chillies and peppers, but sometimes I plant them out in the soil. Tomatoes and cucs go in the soil too.