From where I sit in our Living Room I can look out onto the garden, and at this time of year I can tell roughly what the temperature is, just by looking at the brassica plants. When it is really cold they "huddle up" with their leaves pointing downwards in an inverted V shape, but when it warms up you can almost hear them go "aaaahh"; the leaves go back up again and the plant takes on a sort of T shape!
