Personally I'd want to take that person around the garden and ask them to tell me what they would do, and to identify weeds and other plants, informally, but I'd know instantly if they know their stuff or not. I love my garden too much to have someone who hasn't got a clue torture it. I'd be happy to take someone on to teach them, if they didn't know but showed that they were genuinely interested.
How will things change if our summers keep getting hotter



