That'll work when typing things online, but not in f2f conversations. I thought about 'com(m)' which will work, typed out in certain contexts, but I think that sounds too much like other words in several languages including English to use in speech. But if you prepend 'lemmy' to that it's quite a distinguishable word that sounds like 'lexicon': lemmycom(m)!
There's a lemmycom for that.
Managed to find a copy of Sprout Lands, and reading the synopsis I see 'living hedge' mentioned. In season 2 of Clarkson's Farm (Jeremy Clarkson trying to run a farm) there's a match organized where folks make traditional living hedges, something I had never heard of but found fascinating. So thanks for this recommendation, sounds right up my alley.