That is interesting to know...thanks for letting us know. Sorry you had the same thing happen.
Its a disappointment but I did not realise the haulm was leaning against the panes and they conducted the cold, whereas the other plants were away from the greenhouse side walls.. I will try the Bubbkewrap trick next time as fleece didn't protect the plants.
Interestingly my experimental Peruvian Red potatoes are still fine... They look strange similar to a ginger root tuber. But I am told they taste good. Maybe I will try a few this weekend..
In the end it is a learning curve
Yes we learn from our mistakes.
Went through the soil and found lots of mini new potatoes! All was not lost...at least we have micro dot potatoes!