Hi
I have a gravelled area at the end of my garden which provides parking for my weekend car. It has a pergola and trellis around it. I currently have two roses climbing one side of it but another side I want something else that once its grown creates a visual barrier.
So these are my requirements -
Evergreen
Not harmful/poisonous to my cats
Grow in clay soil
Area gets full sun until midday and then partial shade for the rest of the afternoon.
It doesn't need to flower although I guess that would be nice!

Any advice would be greatly appreciated.