Kie-row is how I would say it, like tie. I still don't get that whole Kansas/Arkansas difference to be honest!
I’m talking about the one in Illinois. Not Cay- ro , then, or Care-o?
I'd still say it like the Cairo in Egypt, but as @rowlandscastle444 noted about the UK, the US is also full of different dialects. To me, Care-o is a syrup (Karo corn syrup) and Cay-ro sounds like a southern accent.
New England, USA
Metacomet soil with hints of Woodbridge and Pillsbury
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Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
I live in west central Scotland - not where that photo is...
I must be a barbarian!!