Problem with grass creeping from next door into border
I have a very narrow strip boarder that runs adjacent to a fence. The neighbouring property is rented and so the garden is pretty much only looked after once a year or so, and their borders have been left to run rampant with grass, which means I have a problem with grass growing under the fence and into my garden.
I spend a lot of time digging out the rhizomes and roots every 4 months or so. I'm hoping to get some plants in next year and would like to reduce the spread of grass from next door. I only really want to grow foxgloves and perhaps hesperis matronalis in this border as it's only exposed to partial-sun, but I'm worried about the impact of the grasses next door.
Any advice appreciated. Thanks!