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Hire rotovator, break into fine tilth, throw away crap, roll and re-turf.
Best practice is a 9" block or brick wall with weep holes at the bottom. Possibly sleepers on top of block wall to hide ugly blocks. Proper railway sleepers would last probably 15 years if used as a wall, new pine ones would last five minutes.
Not at the moment, all suppliers closed!
Yes. Either run it through conduit or use armoured cable. Put shingle 4" all around and a warning plastic tape above. Go as deep as you can...
Ok long post warning.
I have a garden. I know nothing about gardening. What I do know is that I want to do something with the bland rectangle. I’ll break this down into several questions:
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