Autumn is well and truly here. In fact, I'd have to say that it was really quite wintry when I left for work this morning as everywhere was white with frost. The vines are all busy shutting down and are losing their leaves. Triggered by decreasing daylight hours, senescence begins in the mesophyll cells located in the margins of the grape leaf and slowly advances inward. (The leaf above is a great example). Temperature does not play a part in the onset of senescence, but frosty mornings will definitely speed up the whole process. And yesterday, I harvested my last batch of tomatoes, so I think it is finally time to admit summer is over, sigh.