First we use spray paint to mark the outline of the flower bed shape.
We use a bed edger to create a trench where the curb is to be placed
We then rake the extra dirt and grass. We put it in garbage bags and haul it away with us.
Now we start mixing the concrete.
We add the principle ingredients:
We empty the mix into a wheel barrel and bring it over to the machine where it is extruded on the ground into the trench. In one whole piece preventing shifting.