Around this time last year I mentioned that we were having the severest winter in a decade.In Tim's response he mentioned that whatever we get the UK will get 7-10 days later. After having one of the mildest late autumns on record winter finally arrived this week. Boston, Massachusetts had it's coldest day, for the date, ever recorded yesterday (9/1). I woke up to a temperature of -25C this morning, with a high of -16C today. As I type this it is -18C, in one hours time the New England Patriots will be playing an American football game less than 100 miles away! While this air mass will moderate crossing the pond everyone who has a heated greenhouse might want to check their heaters as it seems you are probably going to get chilly soon.