Eco-friendly member shows talent in garden (5,5)

I believe the answer is:

green thumb

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'talent in garden' is the definition.
The definition suggests a singular noun which matches the answer.

'eco-friendly member' is the wordplay.
'eco-friendly' becomes 'green' (green can mean good for the environment).
'member' becomes 'thumb' (thumb is a kind of member).
'green'+'thumb'='GREEN THUMB'

'shows' acts as a link.

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I've seen this clue in The Times.

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