Run a steel cable or rod between that wall and the brick pillar?
Our plan was to create a shady area using the wisteria and its leaves. A steel cable was already there but it broke today
What country are you in? That will determine materials availability. It looks like Italy.
That’s right, I live in Italy (I’m curious, how could you tell?)
I’ve spent enough time in sunny villas in Tuscany to get a sense of it. Anyways, how did the cable break? If you can run a braided steel cable through some hooks or clamps it’ll be rugged enough to hold in place, I worry about the stone being too soft and tearing out from a masonry screw under tension, but it’s a thought.
We used a plastic support grid but as you can see it has been bent. What kind of material would support it without bending? Would wood be enough? Thanks!
The thin grid-style rebar that’s used in concrete might work. Though you’d want to paint it.