A very simple verticle blackberry trellis … cattle panel and tposts.
You can weave the canes thru the panel holes to secure them… and i also tie them when needed with a bit of jute twine.
Simple, works well, easy to mow around, harvest from…
I have Loganberry and Obsidian (longer trailing type canes) on trellis like this… setting up another for Kiowa and Caddo this week.
TNHunter