Are your zones numbered the same as ours?

Most of the UK falls into three hardiness Zones: 7, 8 & 9.

Zone 7 is the coldest and if you live in Scotland, you will know what it
feels like. In Winter the average temperature can go down to between -12.3C
and -17.7C (10 and 0F) which is cold

Zone 8 covers most of England apart from a small bit in the Midlands and a
strip around the coast. Here the Winter temperature can drop to -6.7C
and -12.2C

Zone 9 includes a strip all round the West, South and East Coast where the
average Winter temperatures are between -1.2C and -6.6C

Zone 10, yes I know its not listed above, but Zone 10 is the very tip of
Cornwall and the Scilly Isles which can expect to stay free of frost with
temperatures of +4.4C and -1.1C

If you are joining your husband in Lincoln, you can expect Zone 8, BUT,
English weather can be snow in one place and lovely warm sunshine not too
far away. 20 - 30 miles

Hope that helps a little

Mike
In the Isle of Wight which is just off the bottom near Portsmouth and
Southampton