In article ,
Charlie Pridham wrote:

The choice of evergreen hardy climbers is (sadly) limited, your best bet
would be something like Vinca planted at the top as it is happy to trail,
evergreen, hardy, easy, cheap and flowers over a long season go for one of
the Vinca majus cultivars.

Limited is an understatement; in the colder areas of the UK, it
means just Hedera helix; in most of the UK, it means that and
H. colchica; only in the warmer areas are there any others.

Here in Cambridge, there are several other hardy 'evergreen'
climbers, but none are reliably evergreen. Clematis armandii
does pretty well, and Lonicera henryi even better, but I can't
call them either reliably hardy or reliably evergreen. All of
the other 'evergreen' ones I grow are effectively deciduous.


Regards,
Nick Maclaren.