How best to fix trellis in front of Concrete Fence Post

Hi

I want to fix trellis vertically in front of the concrete posts.

The concrete posts are strong, but old and started to crumble on drilling. So I cannot fix direct to the concrete posts.

I tried fixing batons to the fence itself, to accommodate the gap between the face of the fence and the front of the posts - then fixing the trellis to the batons - but (i) the concrete posts aren't straight, so the trellis doesn't sit flat; (ii) the wood batons kept splitting on fixing to the fence; (iii) with the drop of the garden, I'm frequently only getting three fixing points, as the bottom.of the fence is by the soil.

I am also a little concerned about fixing it to the fence panels, and consequently prematurely aging them. Or the weight damaging them. I'd much rather the weight went onto the posts.

The trellis' are fairly heavy duty Jackson's Fencing stuff.
Evergreen climbers will go up the trellis.

Has anyone got any other bring ideas?
Thanks

The Fences and Concrete Posts


What I am looking to achieve

Thanks this is really helpful to get a real world review.

The owners also seem nice, quick to respond and give guidance.

I'll be using the trellis brackets, two per trellis, given weight, hopefully should work well

https://postfixbrackets.co.uk/product/vertical-fan...