In his weekly Jamie’s Little Allotment column, Jamie Marsh discusses the recent hot spell… I don’t think hot was the word for it, 34 degrees outside, and 45 inside the greenhouse, are the temperatures I saw this week just gone. Now, I’ll be the first one remind people who are moaning that it’s too hot, that it was only a few weeks ago we were wishing the rain would stop and the nights would start warming up, but recent temperatures are worth moaning about in my book, especially if you need to work in them. There is one thing which you really need to remember to do this time of the year and tha…