Cut green tree – it might be used for a hedge? (1-4)

I believe the answer is:

e-cash

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'it might be used for a hedge?' is the definition.
I know nothing about this answer so I cannot judge whether this works.

'cut green tree' is the wordplay.
'cut' means to remove the last letter.
'green' becomes 'eco' (abbreviation for ecological).
'tree' becomes 'ash' (ash is a kind of tree).
'eco' with its final letter taken away is 'ec'.
'ec'+'ash'='E-CASH'

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I've seen this clue in The Guardian.

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