Locking concrete blocks
I recommend using interlocking concrete landscaping blocks to build garden beds.
No mortar - rearrange them as you change your mind.
Build up to a metre high. Just lay on a good bed of levelled gravel - still no mortar.

Build to any radius
Pretty good results are possible for a non-professional.
Learnings
- getting the initial base level is the key to success
- make sure you have sufficient dug-out clearance behind them to allow for the batter (slope) as they rise in levels
- whack the artifical lookinmg bits off the supposedly rough corners before you stack them
- cut them with an angle grinder or masonry saw - very hard to scribe and split them cleanly like a paver or brick
- don't forget to put conduit for water and electrical in
- order more









Made in New Zealand 
Did you do all this work by
Did you do all this work by yourself? It's amazing how well it turned out to be. When it comes to concrete I only know how to use a concrete vibrator but that's pretty much all I can do and I can't use it here. You really were ingenious on those measurements. Thanks for all the tips, I might try them some day!
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