Q.South West facing garden in front of cement wall
I have a large cement wall that is south west facing. I live in an area that is dry and experiences water restrictions June – September, can get to high 30 degrees Celsius in summer, -20 to -30 degrees in winter months. Ideally would like to plant perennials over annuals, any climbing suggestions for a 2-3 foot trellis in front of the wall?

These articles will help you.
https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-4/vines-for-zone-4-gardens.htm
https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-3/flowering-vines-for-zone-3.htm
https://www.gardeningknowhow.com/garden-how-to/gardening-by-zone/zone-6/zone-6-evergreen-vines.htm