Silly fellow to pay for a plant (9)

I believe the answer is:

goosefoot

'plant' is the definition.
(goosefoot is a kind of plant)

'silly fellow to pay' is the wordplay.
'silly fellow' becomes 'goose' (I've seen this in another clue).
'to pay' becomes 'foot' (as in footing the bill).
'goose'+'foot'='GOOSEFOOT'

'for a' is the link.

(Another definition for goosefoot that I've seen is " Plant of the beet family".)

I've seen this clue in the Sydney Morning Herald.

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