Hello @Leoniechard
Welcome to the Bunnings Workshop community. It's sensational to have you join us and thanks for sharing your question about the Jack trellis kit.
If you are anchoring onto a timber surface, my best advice would be to drill pilot holes to prevent splitting the timber. Please keep in mind not to drill past the thickness of the timber panel. If you are attaching it to a masonry or brick wall, I suggest pre-drilling into the brick wall and using wall plugs to keep the posts in place.
If you need further assistance, please let us know.
Eric
