

I'm looking at painting my fence soon to give it a fresh look. But before I do it, I want to close off the gap between the fence and the sleeper/retaining wall.
Any ideas on the best way to do it ?
One idea I have is leave it as is, but later on build a garden bed along the fence that will cover this space.
But want to check if these is a cost effective way to cover this gap and paint over for a better look, and to stop the neighbors veggies growing through the gap.
TIA