Krugerrand
Crowing
Here's the thing .... when grass grows through, it will pretty much 'lock it in place' ... but you probably don't want it 'locked in place' with the edges sticking up. So, once the grass grows through, it won't matter if the landscape pins are there or not. But, the grass won't pull the edges down for you. And, while bricks can help do that, the grass obviously won't grow where the bricks are.
So, especially if you are looking to run the lawn mover over it, you want the edges held down so that can happen. And, bricks won't work to well from a lawn mowing perspective.
So, especially if you are looking to run the lawn mover over it, you want the edges held down so that can happen. And, bricks won't work to well from a lawn mowing perspective.