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common or garden
(used before a noun; sometimes hyphenated) Standard, unexceptional, or commonly found. Primarily heard in UK. That's just your common or garden house spider; there's no need to be concerned about its bite. I'm just looking for a common-or-garden mobile phone; I don't need anything fancy.
COMMON You use common-or-garden to describe something of a very ordinary kind and with no special features. These are designer rain boots — not your common-or-garden wellies. He's just a common-or-garden petty criminal. The experiment itself is garden-variety science that normally would attract little public attention. Note: These expressions were originally used to describe the most ordinary variety of a species of plant.