You've got it wrong. We have our various traditions here. I remeWber as a child going guising with friends all dressed up and doing a song ,poem, or whatever round our neighbours houses in return for a toffee apple or tablet or whatever was on offer.
What has happened in recent years is that or traditions have been hijacked by the Yank idea of trick or treat.Perhaps accelerated by the likes of Asda/Walmart. when I was young it was a turnip lantern. No one had heard of pumpkins.