MULCHING..!!!

Morning all..!!
I've just read an article online that says you can lay a layer of newspaper on the earth before covering with a mulch. This prevents weed invasion (to a degree) and also helps to retain moisture to the plant. Has anyone else tried this? Does anyone think this is a worthwhile effort? (especially as there is an imposed water hose ban here in the south).
Many thanks
Dizzi
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back in the day my grandad used newpaper on his allotment and black bags in his garden as weed supressors. I doubt it would give you any lasting prevention but there is limted cost and could be worth a trial i know the south going to struggle this year with the hose pipe ban.
Many thanks for your input Stephen. I might just give it a trial and see how it goes. What with the amount of free newspapers that get posted through my letter box on a weekly basis - recycling it back into my garden appears to be a sound option..!!