I thought liberty caps needed a cold shock to get them fruiting, which is why we don't see them until Mid-late Autumn? Yet here it's suggesting now is a good ti

I thought liberty caps needed a cold shock to get them fruiting, which is why we don't see them until Mid-late Autumn? Yet here it's suggesting now is a good time to pick across broad swathes of the North of England - when it's incredibly hot here in Blighty?