Where can I find alloy/plastic don't care what 4" deep lawn edging. Tried many places for the last month!!

I've seen that at HomePro and Index Living mall but I don't know if you have those in your area. You can also get someone with some skills to make you some cheaply out of thin or thick bamboo. Thin bamboo is cut to length and hammered in whole. Thick bamboo is split vertically into quarters before hammering in.

Google 'bamboo edging' and you will see photos of the different types

https://www.google.co.th/search?q=bamboo+edging&espv=2&biw=1140&bih=621&tbm=isch&tbo=u&source=univ&sa=X&ei=rtQcVfWnC4W7uAS_tILoBA&ved=0CBsQsAQ

The idea of bamboo edging is great and visually perfect; but the drawbacks are it doesnt last 10minutes.

As an example I bought the packs of thin bamboo sticks as setting out pegs for my new build.

I hammered in about 20 pegs and left the other 25 on my concrete floor.

The pegs in the lawn after 4months are 50% rotten and the discarded pegs are majking a wonderful home for ants or bamboo beetle judging by the adjacent piles of bamboo dust..

If you are to use the them it would be a good idea to give them a coat of preservative stain first and then even lacquer to protect them from going black in the rain.

This is one unprotected and one I varnished. Both installed same time though this was 2" bamboo not the pegs.

Cheers. Did try Homepro but not available, at this time anyway.