Posted: 07/01/2015 at 17:42
Bit difficult to see whether you have a soil border against your breeze block wall.
If you don't have a border or it is so minimal, why not use wall troughs ? Fixings should be easy and safe in the blocks and you can grow quite a lot with a south west aspect.
Fruit, such as strawberries or herbs or annuals. If you are prepared to re plant your troughs ever 2 or 3 years, you can plant a semi permanent arrangement with perennials too.
Decent troughs and supports and the wall is your oyster so to speak