You can see the first easy care garden that I made in the UK using slate (in Israel It slate considered posh material) and wooden edging- it took more than a day to cut it and stake it to the ground and I just couldnot get all the right curves that I wanted.( shorter lifetime too)
these gardens are both for around 80 years old people that ''prefer to play golf than work in the garden'' as they say -so both happy with it.
the strimmer resistant as a lawn edging-garden edging does not have to be used for lawn.
last year at the Bbc Gardeners world show. Lawn edgings in rolls of 25m, 50m and 100m.buy plastic edging: http://www.best4garden.co.uk/shop/page/27?shop_param=