In article ,
says...
In article
,
herbgarden writes

BUT ... what
sort of stuff do you use for an organic garden?

I used scaffolding planks and painted them with a wood preservative.
Thought they'd last forever but noticed after three years that the
bottom edges are rotting or beginning to!


Don't know how organic it is but I use 45x45cm slabs set just over half
in the ground and if needs be the tops can be covered with plastic drain
pipe which has had a slot cut length ways and then clipped over, yes they
sometimes shift but are not set in concrete and are easy enough to get
back upright.
--
Charlie Pridham, Gardening in Cornwall
www.roselandhouse.co.uk
Holders of national collections of Clematis viticella cultivars and
Lapageria rosea