Kay Easton wrote:

In article , Roger Van Loon
writes

Sorry, Alan, I'm not American :-)
But - I wonder if you really think there's no zone difference between
the Isles of Scilly and the top of Ben Nevis... :-))

There's a latitude difference between the Scillies and Ben Nevis, an
altitude difference between the base of Ben Nevis and the summit, and
then there's weather, which means that on any particular day it is quite
possible for the hottest place in the British Isles to be in the N of
Scotland.

So that earlier this year, I was gardening in a t-shirt while those 200
miles south were complaining of ice and rain.
--
Kay Easton

I don't doubt any of that.
But as long as you can grow large-leaved tree Rhododendrons in
Cornwall and in the West of Scotland, and not in the rest of the UK,
you have different climatic zones.
Not so?
Regards,
Roger.

--
Walk tall, walk straight, and look the world right into the eye.

You're welcome to visit my gardening page:
http://users.pandora.be/roger.van.loon/gardenp.htm