I’ve just taken out the existing timber sleepers we had in place in order to extend our garden beds and create more organic curved garden borders. It’s a small suburban garden. I do have a pile of old reclaimed bricks I could use to create a curved garden edge.. However, wondering if a trench dug edge is better in consideration it’s quite a small space and I do want to blur garden beds and the open area (currently undecided if the open area will be graven or a mown wallaby grass or similar). Any thoughts would be appreciated.