How does the weather compare to UK, sounds colder than N.Scotland?
Depends what region (obviously on the mountains it will be colder than on lower grounds), but even down south towards the mountains you can grow peaches up to 450m, i.e. around 1500ft, in UK you wouldn't be able to grow apples that high!
Winters are colder (on average) but summer's are much warmer. Average temperature in summer on Leicester is around 18C, in Poland around 23C. I.e. 27C at day time, and 18C at night.
Poland has the best climate in Europe for growing grain. That's why it's the largest producer of poultry and pork - because grain is cheaper to grow and locally available - no need to import.
We also produce around 80% of apples and 90% of geese in Europe.