I know this is the conifer forum, but maybe close enough?

I have some wood bark mulched areas I was considering to replace with a ground cover like periwinkle or pachysandra. They've both grown on the property before so I know the conditions are good. In fact both are still growing wild here and there. There is enough periwinkle that I thought about transplanting what I have, since it is a bit expensive. However, I have two strips of border along two sides of my house that are about 45 ft long and 3 ft wide. Is that wide enough for periwinkle, or am I in for a battle to keep it out of the grass? If I could edge it once in the spring and maybe once in the fall and be good, I'd be fine with that, but I don't want to fight runners making their way through the grass all summer. I think the pachysandra would be less invasive, but I like the periwinkle better.

Any thoughts?