Posted: 10/12/2015 at 16:56
I'd forget grass. Various nice gravels are available, such as the flinty or Cotswold ones about 20mm, which are a yellow/gold colour, or use slate, which comes in various colours. Lay this on a base of AT LEAST 150mm (I used 300mm on a couple of jobs and they're still fine after 15 years) of crushed stone of the sort that is sold as sub-base (20mm to dust). Compact this base course with a tamper or by machine (a whacker or a small roller). Brick edge or timber would be fine. Don't under-design or skimp on the build quality - you only want to do the job once!