It is so funny.... how you start talking or thinking about something like block walls, landscaping beds, even house colors you're thinking of trying out....then you see them EVERYWHERE and maybe for the first time, actually noticed something you've driven by 100x and never really paid attention.
Actually, I must say....that first and foremost, all of my fences, borders and walls and even trellises and fences must first be functional...then either, (A) Choose which plants/structures,(softscape) will go in the bed, based on the "personality" of the hardscape.
There isn't a single, formal thing about my garden. I live in a very old home, I like to create landscaped areas which appear to have been here as long as the house. Even though we live at the beach, I kind of grew up in the woods. I love ferns and the sun dappling the ground through tree leaves and moss covered rocks.
Ahhhhhh...
We have "beachy" areas and then we have woodsy areas. Why? Because I have to have it all.
My yard is also never the same for more than 2 years. By that time, I am ready for a change and I've gotten a wild hair and decided it's time to redo something. I exasperate my husband, because he never knows what he's going to come home to, if I've had too much time on my hands.
So? mortar in a wall or border? Hahaha....that would never work around here. I have to be able to take things apart, in order to reuse them. No, mortar would never do.